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CSS Components Notes

Utilities

Resizable Class

Resizable div:

// bottom-right:
new_width = element_original_width + (mouseX - original_mouseX)
new_height = element_original_height + (mouseY - original_mouseY)

// bottom-left:
new_width = element_original_width - (mouseX - original_mouseX)
new_height = element_original_height + (mouseY - original_mouseY)
new_x = element_original_x - (mouseX - original_mouseX)

// top-right:
new_width = element_original_width + (mouseX - original_mouseX)
new_height = element_original_height - (mouseY - original_mouseY)
new_y = element_original_y + (mouseY - original_mouseY)

// top-left:
new_width = element_original_width - (mouseX - original_mouseX)
new_height = element_original_height - (mouseY - original_mouseY)
new_x = element_original_x + (mouseX - original_mouseX)
new_y = element_original_y + (mouseY - original_mouseY)

Hidden Class

  • display: none: 元素不在 DOM 流.
  • visibility: hidden: 元素在 DOM 流, 隐藏不可见, 不可触发事件.
  • opacity: 0: 元素在 DOM 流, 透明度为 0, 可触发事件.
.hidden-overflow {
max-height: 0;
overflow: hidden;
}

.hidden-opacity {
position: absolute;
filter: opacity(0%);
opacity: 0;
}

.hidden-stacking {
position: relative;
z-index: -1;
}

.hidden-clip {
position: absolute;
clip: rect(0 0 0 0);
}

.hidden-visibility {
position: absolute;
visibility: hidden; /* visibility 具有继承性 */
}

.hidden-display {
display: none;
}

Typography

Flexible Heading

h1 {
display: flex;
align-items: center;
width: 100%;
}

h1::before,
h1::after {
flex: 1;
height: 0.1em;
margin: 0.2em;
content: '';
background-color: gray;
}

Text Preset

.text-primary {
font-family: sans-serif;
font-size: 12px;
font-weight: 400;
line-height: 100px;
color: black;
text-decoration: none;
text-transform: uppercase;
letter-spacing: 1.3px;
font-display: swap;
}

Landing Page

Jumbotron Background Image

h1 {
background-image: url('bg.jpg');
background-clip: text;
}

.jumbotron {
min-height: 100%;
background-image: url('');
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
opacity: 0.8;
}

Muted Video

.fullscreen-video {
position: absolute;
top: 0;
left: 0;
z-index: -100;
width: 100%;
height: 100vh;
overflow: hidden;
background-size: cover;
}

.fullscreen-video video {
min-width: 100%;
min-height: 100%;
}

Search Light Effect

:root::before {
position: fixed;
z-index: 1000;
display: block;
width: 100%;
height: 100%;
pointer-events: none;
content: '';
background: radial-gradient(
circle 16vmax at var(--cursor-x) var(--cursor-y),
rgb(0 0 0 / 0%) 0%,
rgb(0 0 0 / 50%) 80%,
rgb(0 0 0 / 80%) 100%
);
}

Float Navigation

Styling lists:

  • list-style-type: 改变 ul/ol 前标记类型.
  • list-style-image: 改变 ul/ol 前标记类型.
  • 设置 <a href="#"> 样式.
ul {
/* 垂直菜单设置宽度, 水平菜单不设置宽度 */
list-style: none;
}

/* 水平菜单 */
li {
float: left;
}

a {
display: inline-block;
text-decoration: none;
cursor: pointer;
}

Inline Block Navigation

ul {
text-align: right;
}

li {
display: inline-block;
}
.anchor {
display: none;
}

.content {
max-height: 0;
overflow: hidden;
opacity: 0;
transition:
max-height 0.3s,
opacity 0.3s;
}

.anchor:target ~ .content {
max-height: 100%;
opacity: 1;
}

Tab Navigation

.tab > a {
position: relative;
display: inline-block;
padding: 0.3em 1em 0;
}

.tab > a::before {
position: absolute;
inset: 0;
z-index: -1;
background: #ccc;
background-image: linear-gradient(
hsl(0deg 0% 100% / 60%),
hsl(0deg 0% 100% / 0%)
);
border: 1px solid rgb(0 0 0 / 40%);
border-bottom: none;
border-radius: 0.5em 0.5em 0 0;
box-shadow: 0 0.15em white inset;
transform: perspective(0.5em) rotateX(5deg);
transform-origin: bottom;
}
  • 如果页面内容不足够长时, 页脚固定在浏览器窗口的底部.
  • 如果内容足够长时, 页脚固定在页面的最底部.

Negative bottom margin content-wrapper with fixed height footer:

<body>
<main class="wrapper">
content
<div class="push"></div>
</main>
<footer class="footer"></footer>
</body>

<style>
html,
body {
height: 100%;
margin: 0;
}

.wrapper {
min-height: 100%;

/* Equal to height of footer */

/* But also accounting for potential margin-bottom of last child */
margin-bottom: -50px;
}

.footer,
.push {
height: 50px;
}
</style>

Negative top margin on fixed height footer:

<body>
<main class="content">
<section class="content-inside">content</section>
</main>
<footer class="footer"></footer>
</body>

<style>
html,
body {
height: 100%;
margin: 0;
}

.content {
min-height: 100%;
}

.content-inside {
padding: 20px;
padding-bottom: 50px;
}

.footer {
height: 50px;
margin-top: -50px;
}
</style>

calc on fixed height footer:

<body>
<main class="content">content</main>
<footer class="footer"></footer>
</body>

<style>
.content {
min-height: calc(100vh - 70px);
}

.footer {
height: 50px;
}
</style>

Use flex on body:

<body>
<main class="content">content</main>
<footer class="footer"></footer>
</body>

<style>
html,
body {
height: 100%;
}

body {
display: flex;
flex-direction: column;
min-height: 100vh;
}

.content {
flex: 1 0 auto;
}

.footer {
flex-shrink: 0;
}
</style>

Use grid on body:

<body>
<main class="content">content</main>
<footer class="footer"></footer>
</body>

<style>
html {
height: 100%;
}

body {
display: grid;
grid-template-rows: 1fr auto;
min-height: 100%;
}

.footer {
grid-row: 2 / 3;
}
</style>

Use gird with min-content:

<body>
<div class="grid">
<header>
<!-- ... -->
</header>
<main>
<!-- ... -->
</main>
<footer>
<!-- ... -->
</footer>
</div>
</body>

<style>
.grid {
display: grid;
grid-template-rows: min-content auto min-content;
height: 100vh;
}
</style>

Styling links:

a {
padding: 2px 1px 0;
text-decoration: none;
outline: none;
}

a:link {
color: #265301;
}

a:visited {
color: #437a16;
}

a:focus {
background: #bae498;
border-bottom: 1px solid;
}

a:hover {
background: #cdfeaa;
border-bottom: 1px solid;
}

a:active {
color: #cdfeaa;
background: #265301;
}

a[href^='http'] {
padding-right: 19px;
background: url('external-link-52.png') no-repeat 100% 0;
background-size: 16px 16px;
}
a {
text-decoration: none;
pointer-events: none;
cursor: default;
opacity: 0;
}

Change bottom border:

a {
position: relative;
padding-bottom: 5px;
color: #008080;
text-decoration: none;
}

a::after {
position: absolute;
bottom: 0;
left: 0;
width: 0;
height: 3px;
content: '';
background-color: #22313f;
transform-origin: bottom-center;
}

a:hover,
a:focus {
color: #22313f;
}

a:hover::after,
a:focus::after {
width: 100%;
}
<a
href="https://github.com/Trevald/WhatTheTag.com"
class="github-corner"
aria-label="View source on GitHub"
>
<svg
width="80"
height="80"
viewBox="0 0 250 250"
style="
position: absolute;
top: 0;
right: 0;
color: #2d3748;
border: 0;
fill: #718096;
"
aria-hidden="true"
>
<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z" />
<path
d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
fill="currentColor"
style="transform-origin: 130px 106px"
class="octo-arm"
/>
<path
d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
fill="currentColor"
class="octo-body"
/>
</svg>
</a>
.github-corner:focus .octo-arm,
.github-corner:hover .octo-arm {
animation: none;
}

@media (prefers-reduced-motion: no-preference) {
.github-corner:focus .octo-arm,
.github-corner:hover .octo-arm {
animation: octocat-wave 560ms ease-in-out;
}
}

@keyframes octocat-wave {
0%,
100% {
transform: rotate(0);
}

20%,
60% {
transform: rotate(-25deg);
}

40%,
80% {
transform: rotate(10deg);
}
}

Button

a.btn-custom {
padding: 10px 40px;
line-height: 100px;
text-align: center;
background-color: #000;
border-radius: 0;
}

Gradient Button

Linear Gradient Button

.btn {
display: inline-block;
padding: 5px;
color: #333;
text-decoration: none;
background-image: linear-gradient(to top, #333 50%, #fff 50%);
background-size: 100% 200%;
transition: all 0.3s;
}

.btn:hover,
.btn:focus {
color: #fff;
background-position: 0 100%;
}
.btn-1 {
background-image: linear-gradient(
to right,
#f6d365 0%,
#fda085 51%,
#f6d365 100%
);
}

.btn-2 {
background-image: linear-gradient(
to right,
#fbc2eb 0%,
#a6c1ee 51%,
#fbc2eb 100%
);
}

.btn-3 {
background-image: linear-gradient(
to right,
#84fab0 0%,
#8fd3f4 51%,
#84fab0 100%
);
}

.btn-4 {
background-image: linear-gradient(
to right,
#a1c4fd 0%,
#c2e9fb 51%,
#a1c4fd 100%
);
}

.btn-5 {
background-image: linear-gradient(
to right,
#ffecd2 0%,
#fcb69f 51%,
#ffecd2 100%
);
}

.btn:hover,
.btn:focus {
background-position: right center; /* change the direction of the change here */
}

Radial Gradient Button

.ripple-button {
color: #fff;
background-color: #2a80eb;
}

.ripple-button:active {
background-image: radial-gradient(
160% 100% at 50% 0%,
hsl(0deg 0% 100% / 30%) 50%,
hsl(0deg 0% 100% / 0%) 52%
);
}

.colorful-button {
color: #fff;
background-color: #2a80eb;
background-image: radial-gradient(
farthest-side at bottom left,
rgb(255 0 255/ 50%),
transparent
),
radial-gradient(
farthest-corner at bottom right,
rgb(255 255 50/ 50%),
transparent
);
}

3D Shadow Button

.shadow-3d-button {
width: 100px;
height: 36px;
background-color: #f0f3f9;
border: 1px solid #a0b3d6;
box-shadow:
1px 1px #afc4ea,
2px 2px #afc4ea,
3px 3px #afc4ea;
}

.shadow-3d-button:active {
box-shadow:
1px 1px #afc4ea,
2px 2px #afc4ea;
transform: translate(1px, 1px);
}

Button Reference

Table

Styling tables:

  • table-layout: fixed to contain cells with same width, makes <table> behave a bit more predictably.
  • border: 0 and border-collapse: collapse to remove border line.
  • text-align for <th>/<td> text alignment.
  • Implement filter or pagination with display: none applied to <tr>.
/**
* `fixed` layout and `collapse` border.
*/
table {
width: 100%;
table-layout: fixed;
border-collapse: collapse;
border: 3px solid purple;
}

/**
* Spacing and alignment.
*/
th,
td {
padding: 12px 15px;
text-align: left;
border-bottom: 1px solid #e1e1e1;
}

th:first-child,
td:first-child {
padding-left: 0;
}

th:last-child,
td:last-child {
padding-right: 0;
}

/**
* Control column width.
*/
thead th:nth-child(1) {
width: 30%;
}

thead th:nth-child(2) {
width: 20%;
}

thead th:nth-child(3) {
width: 15%;
}

thead th:nth-child(4) {
width: 35%;
}

Form

Form Design Pattern:

  • 由于表单组件多为 Replaced Element, 通过 CSS 控制样式存在困难, 一般利用 label/span 代替 input 的方式, 对 labelspan 进行核心样式控制, 对 input 进行辅助样式控制:
    • :disabled.
    • :checked.
    • :focus-visible.
    • :focus:not(:focus-visible).
    • :active:not(:disabled).
    • :indeterminate.
  • 隐藏 input, 用 label 模拟时, 需要注意表单元素的键盘可访问性:
    • 保持键盘访问: 不应使用 display: none/visibility: hidden 隐藏 input (无法键盘访问), 应使用 [type="checkbox"] { position: absolute; clip: rect(0 0 0 0); }.
    • 修饰键盘访问: 应添加 :focus/:focus-visible 伪类样式, input:focus ~ label { outline: 1px solid red; border: 1px solid red; }.
[type='radio'] {
position: absolute;
width: 1rem;
height: 1rem;
cursor: pointer;
opacity: 0;
}

.radio-label {
background-color: var(--color-transparent);
border-color: var(--color-dark);
border-radius: 999px;
}

:disabled ~ .radio-label {
border-color: var(--color-ghost);
}

:checked ~ .radio-label {
background-color: var(--color-primary);
border-color: var(--color-primary);
}

:focus-visible ~ .radio-label {
outline: 1px solid var(--color-primary);
}

:focus:not(:focus-visible) ~ .radio-label {
border-color: var(--color-primary);
outline: none;
}

:active:not(:disabled) ~ .radio-label {
transform: scale(1.1);
}

Form Input Style

Reset Form Styles

input[type='email'],
input[type='number'],
input[type='search'],
input[type='text'],
input[type='tel'],
input[type='url'],
input[type='password'],
textarea,
select {
box-sizing: border-box;
height: 38px;
padding: 6px 10px;
background-color: #fff;
border: 1px solid #d1d1d1;
border-radius: 4px;
box-shadow: none;
}

/* Removes awkward default styles on some inputs for iOS */
input[type='email'],
input[type='number'],
input[type='search'],
input[type='text'],
input[type='tel'],
input[type='url'],
input[type='password'],
textarea {
appearance: none;
}

textarea {
min-height: 65px;
padding-top: 6px;
padding-bottom: 6px;
}

input[type='email']:focus,
input[type='number']:focus,
input[type='search']:focus,
input[type='text']:focus,
input[type='tel']:focus,
input[type='url']:focus,
input[type='password']:focus,
textarea:focus,
select:focus {
/* Custom border color */
border: 1px solid #33c3f0;

/* Key point: remove default outline */
outline: 2px solid transparent;
outline-offset: 2px;
}

label,
legend {
display: block;
padding: 0;
margin-bottom: 0.5rem;
font-weight: bold;
}

fieldset {
min-width: 0;
padding: 0;
margin: 0;
border-width: 0;
}

input[type='checkbox'],
input[type='radio'] {
display: inline;
}

label > .label-body {
display: inline-block;
margin-left: 0.5rem;
font-weight: normal;
}

Custom Form Button

隐藏 <input>, 添加样式至 <label>/<span>:

<input id="submit" type="submit" />
<label class="btn" for="submit">Submit</label>

<style>
[type='submit'] {
position: absolute;
clip: rect(0 0 0 0);
}

.btn {
display: inline-block;
padding: 2px 12px;
font-size: 14px;
color: #fff;
cursor: pointer;
background-color: #cd0000;
}

:focus + label.btn {
outline: 1px dotted var(--highlight);
}
</style>

Custom Form Checkbox

Input itself as border shape, pseudo elements as center shape (checked transform animation):

input[type='checkbox'] + label::before {
position: relative;
display: inline-block;
width: 20px;
height: 20px;
margin-right: 10px;
content: '';
background: white;
}

input[type='checkbox']:checked + label::before {
background: #5ac5c9;
}

input[type='checkbox']:checked + label::after {
position: absolute;
top: 3px;
left: 27px;
width: 13px;
height: 6px;
content: '';
border-bottom: 2px solid black;
border-left: 2px solid black;
transform: rotate(-45deg);
}

input[type='checkbox']:focus + label::before {
outline: #5d9dd5 solid 1px;
box-shadow: 0 0 8px #5e9ed6;
}

input[type='checkbox']:disabled + label {
color: #575757;
}

input[type='checkbox']:disabled + label::before {
background: #ddd;
}

Custom Form Switch

Pseudo element switch from circle to circle:

  • thumb-size: 2rem.
  • track-width: 2 * thumb-size.
  • track-height: thumb-size.
  • pseudo-element border-radius: 50%.
  • track border-radius: track-size.
  • checked transform: track background-color, pseudo element translateX.
.gui-switch > input {
display: grid;
flex-shrink: 0;
grid: [track] 1fr / [track] 1fr;
align-items: center;
inline-size: var(--track-size);
block-size: var(--thumb-size);
padding: var(--track-padding);
appearance: none;
border-radius: var(--track-size);
}

.gui-switch > input::before {
grid-area: track;
inline-size: var(--thumb-size);
block-size: var(--thumb-size);
content: '';
}

Custom Form Select

.custom-select {
width: 15%;
height: 35px;
margin-right: 20px;

/* 文本属性 */
text-align: center;
text-align-last: center;

/* 消除默认箭头 */
text-indent: 0.01px;
text-overflow: '';

/* 消除默认样式 */
appearance: none;

/* 将箭头图片移至右端 */
background: url('images/arrow.png') no-repeat;
background-color: #fff;
background-position: right;

/* 自定义边框 */
border: 0;
}

.custom-select:focus {
border: 1px solid #e74f4d;
}

.custom-select option {
width: 100%;
height: 25px;
padding-left: 30px;
line-height: 25px;
color: #323333;
background-color: #fff;
direction: rtl;
}

.custom-select option:hover,
.custom-select option:focus {
color: #fff;
background: url('./img/tick.png') no-repeat 8px center;
background-color: #e74f4d;
}

Overlay Modal

.overlay {
position: fixed;
width: 100%;
height: 100%;
background: rgb(0 0 0 / 50%);
}

Box Shadow Modal

.modal {
box-shadow: 0 0 0 50vmax rgb(0 0 0 / 80%);
}

Dialog Modal

<div class="container">
<div class="dialog">
<div class="content">内容占位</div>
</div>
</div>
.container {
position: fixed;
inset: 0;
z-index: 99;
text-align: center;
white-space: nowrap;

/* for IE8 */
background: url('data:image/png;base64,iVB...g==');

/* for IE9+ */
background: rgb(0 0 0 / 50%), none;
}

.container::after {
display: inline-block;
height: 100%;
vertical-align: middle;
content: '';
}

.dialog {
display: inline-block;
text-align: left;
white-space: normal;
vertical-align: middle;
background-color: #fff;
border-radius: 6px;
}

Clip Modal

图片剪裁的矩形镂空效果:

.crop {
overflow: hidden;
}

.crop > .crop-area {
width: 80px;
height: 80px;
cursor: move;
outline: 256px solid rgb(0 0 0 / 50%);
}

Tooltip

利用伪元素 (无法选中) 生成元素, 并设置 pointer-events: none (无法交互):

.tooltip {
position: relative;
cursor: help;
}

/* 三角形 */
.tooltip::before {
position: absolute;
top: 12px;
left: 20px;
display: block;
width: 0;
height: 0;
content: '';
border: solid transparent 5px;
border-bottom-color: rgb(0 0 0 / 80%);
opacity: 0;
transition:
opacity 250ms,
top 250ms;
}

/* 提示文字 */
.tooltip::after {
position: absolute;
top: 22px;
left: 0;
display: inline;
width: 230px;
padding: 0.5em 0.8em;
font-size: 13px;
font-weight: 700;
line-height: 1.5em;
color: #fff;
pointer-events: none; /* This prevents the box from appearing when hovered. */
content: attr(aria-label);
background: rgb(0 0 0 / 80%);
opacity: 0;
transition:
opacity 250ms,
top 250ms;
}

/* Keeps the info boxes on top of other elements */
.tooltip:hover {
z-index: 2;
}

.tooltip:hover::before,
.tooltip:hover::after {
opacity: 1;
}

.tooltip:hover::before {
top: 20px;
}

.tooltip:hover::after {
top: 30px;
}

TreeView

GitHub tree view component:

<div class="tree-view-item">
<div class="spacer"></div>
<div class="toggle"></div>
<div class="content">
<div class="visual"></div>
<span class="text">ReactART-test.js.snap</span>
</div>
</div>

<style scoped>
.tree-view-item {
--toggle-width: 1rem;
--spacer-col: calc(calc(var(--level) - 1) * (var(--toggle-width) / 2));

display: grid;
grid-template-areas: 'spacer toggle content';
grid-template-columns: var(--spacer-col) var(--toggle-width) 1fr;
}

.spacer {
grid-area: spacer;
}

.toggle {
grid-area: toggle;
}

.content {
grid-area: content;
}
</style>

Scroll Effect

Parallax Effect

Background Attachment Parallax Effect

.parallax {
min-height: 60%; /* key */
background-image: url('./images/bg.jpg');
background-repeat: no-repeat;
background-attachment: fixed; /* key */
background-position: center;
background-size: cover;
}

3D Perspective Transform Parallax Effect

3D perspective transform parallax effect:

<div class="parallax">
<div class="parallax-group">
<div class="parallax-layer parallax-fore-layer"></div>
<div class="parallax-layer parallax-base-layer"></div>
</div>
<div class="parallax-group">
<div class="parallax-layer parallax-base-layer"></div>
<div class="parallax-layer parallax-back-layer"></div>
<div class="parallax-layer parallax-deep-layer"></div>
</div>
</div>

<style>
.parallax {
height: 100vh;
overflow: hidden auto;
perspective: 1px;
perspective-origin: 100% 50%;
}

.parallax-group {
position: relative;
height: 100vh;
transform-style: preserve-3d;
}

.parallax-layer {
position: absolute;
inset: 0;
transform-origin: 100% 50%;
}

.parallax-fore-layer {
transform: translateZ(90px) scale(0.7);
}

.parallax-base-layer {
transform: translateZ(0);
}

.parallax-back-layer {
transform: translateZ(-1px) scale(2);
}

.parallax-deep-layer {
transform: translateZ(-2px) scale(3);
}
</style>

Page Progress Indicator

body {
position: relative;
}

.indicator {
position: absolute;
inset: 0;
z-index: 1;
pointer-events: none;
background: linear-gradient(to right top, teal 50%, transparent 50%) no-repeat;
background-size: 100% calc(100% - 100vh);
mix-blend-mode: darken;
}

/* use after element to hidden triangle background gradient */

/* only show 5px background */
.indicator::after {
position: fixed;
inset: 5px 0 0;
z-index: 1;
content: '';
background: #fff;
}

Slides

锚点定位本质上改变了 scrollTopscrollLeft 值, 即使容器设置 overflow: hidden 也会发生滚动, 可以利用锚点定位实现 CSS-only slides:

  • position: absolute to stack slides up.
  • id + :target for style current slide (change z-index).
  • Add animation to slide change: (prev, current, next) .slide, .slide:target, .slide:target ~ slide.
  • Add overflow: hidden to container when animation.
<main>
<section class="slide" id="slide1">
<a class="slide-link" href="#slide2">next</a>
</section>
<section class="slide" id="slide2">
<a class="slide-link" href="#slide1">prev</a>
<a class="slide-link" href="#slide3">next</a>
</section>
<section class="slide" id="slide3">
<a class="slide-link" href="#slide2">prev</a>
<a class="slide-link" href="#slide4">next</a>
</section>
<section class="slide" id="slide4">
<a class="slide-link" href="#slide3">prev</a>
<a class="slide-link" href="#slide5">next</a>
</section>
<section class="slide" id="slide5">
<a class="slide-link" href="#slide4">prev</a>
</section>
</main>
body {
overflow: hidden; /* key 1 */
}

.slide {
position: absolute; /* key 2 */
z-index: 0; /* key 3 */
box-sizing: border-box;
width: 100%;
height: 100vh;
}

.slide:target {
z-index: 1; /* key 4 */
}
/* Rotate Fade-In Animation */
@media only screen and (prefers-reduced-motion: reduce) {
.slide {
transition: none;
}
}

.slide {
z-index: 0;
transition:
transform 1s,
opacity 0.8s;
transform: rotate(90deg);
transform-origin: 0 0;
}

.slide:target {
z-index: 1;
transform: rotate(0deg);
}

.slide:target ~ section {
opacity: 0;
transform: rotate(-90deg);
}

当两个 width: 100% slide 同时处于同一水平位置, 添加左进/右进动画, 当 slide 向右滑动时, 水平的 scrollX 会直接滑到最右边, 导致幻灯片浏览异常. 解决办法 如下:

function resetScrollX() {
window.scrollTo(0, 0)
}
.gallery {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
grid-auto-rows: 1fr;
grid-auto-flow: dense;
grid-gap: 1em;
}

.gallery .featured {
grid-row: span 2;
grid-column: span 2;
}

.gallery figure {
display: flex;
flex-direction: column;
margin: 0;
}

.gallery img {
flex: 1;
max-width: 100%;
object-fit: cover;
}

Grid Gallery

Timeline and Steps

Use pseudo elements to construct circle and line:

/* The separator line */
.c-timeline-item:not(:last-child) .c-timeline-content::before {
position: absolute;
top: 0;
right: 100%;
width: 2px;
height: 100%;
content: '';
background-color: #d3d3d3;
}

/* The circle */
.c-timeline-content::after {
position: absolute;
top: 0;
left: -12px;
z-index: 1;
width: 20px;
height: 20px;
content: '';
background-color: #fff;
border: 2px solid #d3d3d3;
border-radius: 50%;
}

Background and Shadow

Gradient Border

Gradient border:

.gradient-border {
width: 200px;
height: 100px;
margin: auto;
clip-path: inset(0 round 10px);
filter: hue-rotate(360deg);
border: 10px solid;
border-image: linear-gradient(45deg, gold, deeppink) 1;
animation: hue 6s infinite linear;
}

@keyframes hue {
0% {
filter: hue-rotate(0deg);
}

100% {
filter: hue-rotate(360deg);
}
}

Gradient Box Shadow

Gradient box shadow:

.box::before {
position: absolute;
inset: 0;
z-index: -1;
content: '';
background: linear-gradient(-45deg, #ff3d00 0%, #0400ff 100%);
filter: blur(20px);
border-radius: inherit;
opacity: var(0.7);
transition: opacity 0.3s;
transform: translate3d(0, 20px, 0) scale(0.95);
}

/**
* Prevents issues when the parent creates a stacking context:
* For example, using the `transform` property.
*/
.box::after {
position: absolute;
inset: 0;
z-index: -1;
content: '';
background: inherit;
border-radius: inherit;
}

Geometry and Shape

Pseudo Element Shape

利用伪类画额外图形:

.first-details-intro::after {
position: absolute;
top: 50%;
right: 0;
width: 0;
height: 0;
content: '';
border-top: 15px solid transparent;
border-right: 25px solid #fff;
border-bottom: 15px solid transparent;
}

Border Shape

Horizontal and Vertical Border

Separate set horizontal and vertical radius to make well-designed shapes:

.avatar-shape {
border-radius: 70% 30% 30% 70% / 60% 40% 60% 40%;
}

.avatar {
width: 100px;
height: 100px;
object-fit: cover;
border: solid deepskyblue;
border-radius: 50%;
animation: morph 6s paused linear;
}

@keyframes morph {
0% {
border-radius: 40% 60% 60% 40% / 60% 30% 70% 40%;
transform: rotate(-5deg);
}

100% {
border-radius: 40% 60%;
transform: rotate(5deg);
}
}

.avatar:nth-child(4n) {
animation-delay: -3.5s;
}

.avatar:nth-child(2n + 1) {
animation-delay: -1s;
}

.avatar:nth-child(3n + 2) {
animation-delay: -2s;
}

.avatar:nth-child(5n + 3) {
animation-delay: -3s;
}

.avatar:nth-child(7n + 5) {
animation-delay: -4s;
}

.avatar:nth-child(11n + 7) {
animation-delay: -5s;
}

Transparent Border

Mix transparent with non-transparent border to make shapes (e.g. triangle):

.arrow-up {
width: 0;
height: 0;
border-right: 16px solid transparent;
border-bottom: 20px solid #8888e8;
border-left: 16px solid transparent;
}

.arrow-right {
width: 0;
height: 0;
border-top: 16px solid transparent;
border-bottom: 16px solid transparent;
border-left: 20px solid #e888a3;
}

.arrow-down {
width: 0;
height: 0;
border-top: 20px solid #f7df6c;
border-right: 16px solid transparent;
border-left: 16px solid transparent;
}

.arrow-left {
width: 0;
height: 0;
border-top: 16px solid transparent;
border-right: 20px solid #8de698;
border-bottom: 16px solid transparent;
}

Background Shape

.btn-add,
.btn-sub {
width: 1.5rem;
height: 1.5rem;
color: dimgray;
background:
linear-gradient(currentcolor, currentcolor) no-repeat center / 0.875em 2px,
linear-gradient(currentcolor, currentcolor) no-repeat center / 2px 0.875em;
border: 1px solid gray;
}

.btn-sub {
background-size:
0.875em 2px,
0;
}
.square {
width: 304px;
height: 160px;
background-color: #fff;
background-image: linear-gradient(
45deg,
#eee 25%,
transparent 25%,
transparent 75%,
#eee 75%
),
linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%);
background-position:
0 0,
8px 8px;
background-size: 16px 16px;
}

Background Shape

Stretch Line

  • background line.
  • border line.
  • Pseudo element with line-through text-decoration.
.line {
width: 70%;
height: 10px;
background-color: #000;
}

.line,
.line-background {
background: linear-gradient(#000, #000) 50% / 70% 10px no-repeat;
}

.line,
.line-border {
border-top: 10px solid #000;
}

.line,
.line::after {
/* set thickness */
font-size: 5em;

/* hide content */
color: transparent;
text-decoration: line-through #000;

/* control line length */
content: '_______';
}

Dash Line

  • background dash line.
  • border dash line.
  • Pseudo element with dashed text-decoration.
.dash-background {
background: linear-gradient(to left, #000 70%, transparent 0);
background-repeat: repeat-x;
background-size: 30px 10px;
}

.dash-border {
border-top: 10px dashed #000;
}

.dash::after {
text-decoration-style: dashed;
}

Bar Line

Background gradient bar:

.bars {
--color: no-repeat linear-gradient(#000 0 0);

width: 45px;
aspect-ratio: 1;
background:
var(--color) 0% 50%,
var(--color) 50% 50%,
var(--color) 100% 50%;
background-size: 20% 100%; /* 20% * (3 bars + 2 spaces) = 100% */
}

Grid pseudo element border bar:

.loader {
--size: 100px; /* control the size */

display: grid;
place-content: center;
place-items: center;
margin: 0 calc(var(--size) / 2); /* 50px */
}

.loader::before,
.loader::after {
grid-area: 1 / 1;
content: '';
}

.loader,
.loader::before,
.loader::after {
width: calc(var(--size) / 5); /* 20px */
height: var(--size);
border-radius: var(--size);
transform: translate(calc(var(--index, 0) * 200%));
}

.loader::before {
--index: -1;
}

.loader::after {
--index: 1;
}

Wave line

Rotate border wave:

<div class="container">
<div class="wave"></div>
<p>45%</p>
</div>

<style>
.container {
width: 200px;
height: 200px;
overflow: hidden;
border-radius: 50%;
}

.wave {
position: relative;
width: 200px;
height: 200px;
background-color: rgb(118 218 255);
border-radius: 50%;
}

.wave::before,
.wave::after {
position: absolute;
top: 0;
left: 50%;
z-index: 1;
width: 400px;
height: 400px;
content: '';
background-color: rgb(255 255 255 / 40%);
border-radius: 45%;
transform: translate(-50%, -70%) rotate(0);
animation: rotate 6s linear infinite;
}

.wave::after {
z-index: 2;
background-color: rgb(255 255 255 / 90%);
border-radius: 47%;
transform: translate(-50%, -70%) rotate(0);
animation: rotate 10s linear -5s infinite;
}

@keyframes rotate {
50% {
transform: translate(-50%, -73%) rotate(180deg);
}

100% {
transform: translate(-50%, -70%) rotate(360deg);
}
}
</style>
.icon-menu {
display: inline-block;
width: 140px;
height: 10px;

/* Line gap */
padding: 35px 0;

/* Line 2 */
background-color: currentcolor;
background-clip: content-box;

/* Line 1 */
border-top: 10px solid;

/* Line 3 */
border-bottom: 10px solid;
}

Grid Line

  • background-image for line color,
  • background-size for line gap.
.grid-line {
background-color: #fff;
background-image: linear-gradient(var(--line-color) 1px, transparent 0),
linear-gradient(90deg, var(--line-color) 1px, transparent 0);
background-size: 10px 10px;
border-top: 1px solid #e5e8eb;
border-bottom: 1px solid #e5e8eb;
box-shadow:
inset 0 15px 20px -15px #f6f7f9,
inset -5px -15px 20px -15px #f6f7f9;
}

/**
* @see {@link play.csssecrets.io/blueprint}
*/
.nest-grid-line {
background: #58a;
background-image: linear-gradient(
var(--primary-line-color) 2px,
transparent 0
),
linear-gradient(90deg, var(--primary-line-color) 2px, transparent 0),
linear-gradient(var(--secondary-line-color) 1px, transparent 0),
linear-gradient(90deg, var(--secondary-line-color) 1px, transparent 0);
background-size:
75px 75px,
75px 75px,
15px 15px,
15px 15px;
}

Spinner

  • Rotate conic gradient.
  • Rotate border.

Background gradient loading spinner:

.loading-ring {
--mask: radial-gradient(closest-side, transparent 75%, black 76%);

width: 100px;
height: 100px;
background: conic-gradient(deepskyblue, 30%, white);
border-radius: 50%;
mask-image: var(--mask);
animation: spin 1s linear infinite reverse;
}

@keyframes spin {
from {
transform: rotate(0deg);
}

to {
transform: rotate(360deg);
}
}

More spinner see SpinKit.

Dot

Border Dot

background and border dot:

.icon-dot {
display: inline-block;
width: 100px;
height: 100px;

/* Cycle gap */
padding: 10px;

/* Cycle shape */
background-color: currentcolor;
background-clip: content-box;

/* Cycle ring */
border: 10px solid;
border-radius: 50%;
}

Gradient Dot

radial-gradient dot:

/**
* @see {@link play.csssecrets.io/polka}
*/
.dot {
background: #655;
background-image: radial-gradient(tan 30%, transparent 0);
background-size: 30px 30px;
}

repeating-radial-gradient dot:

@property --length {
syntax: '<length>';
inherits: false;
initial-value: 0.0008px;
}

/* TV snowflake noise signal screen effect (雪花屏效果) */
div {
background-image: repeating-radial-gradient(
circle at 17% 32%,
rgb(4 4 0),
rgb(52 72 197),
rgb(115 252 224),
rgb(116 71 5),
rgb(223 46 169),
rgb(0 160 56),
rgb(234 255 0) var(--length)
);
animation: change 1s infinite alternate;
}

@keyframes change {
100% {
--length: 0.0009px;
}
}

Circle

  • background circle.
  • border circle.
  • clip-path circle.
  • Pseudo element circle.
.circle-background {
background-image: radial-gradient(#000 72%, transparent 0);
}

.circle-background-corner {
background: #58a;
background:
radial-gradient(circle at top left, transparent 15px, #58a 0) top left,
radial-gradient(circle at top right, transparent 15px, #58a 0) top right,
radial-gradient(circle at bottom right, transparent 15px, #58a 0) bottom
right,
radial-gradient(circle at bottom left, transparent 15px, #58a 0) bottom left;
background-repeat: no-repeat;
background-size: 50% 50%;
}

.circle-border {
overflow: hidden;
border-radius: 50%;
}

.circle-clip-path {
clip-path: circle(50%);
}

.circle::after {
font-size: 120vw;
line-height: 0;
content: '·';
}

Ellipse

/**
* @see {@link play.csssecrets.io/half-ellipse}
* @see {@link play.csssecrets.io/quarter-ellipse}
*/
.ellipse {
border-radius: 50% / 50%;
border-radius: 50% / 100% 100% 0 0;
border-radius: 50% / 0 0 100% 100%;
border-radius: 100% 0 0 100% / 50%;
border-radius: 0 100% 100% 0 / 50%;
border-radius: 100% 0 0;
border-radius: 0 100% 0 0;
border-radius: 0 0 100%;
border-radius: 0 0 0 100%;
}

Ellipse Border

Triangle

  • background triangle.
  • border triangle.
  • clip-path triangle.
  • Pseudo element triangle.

Background gradient triangle:

.triangle {
background: linear-gradient(45deg, #000 50%, transparent 0);
}

/**
* @see {@link https://codepen.io/Chokcoco/pen/BGeJGm}
*/
.arrow {
position: absolute;
top: 50%;
left: 50%;
width: 200px;
height: 40px;
font-size: 200%;
color: white;
text-align: center;
background:
linear-gradient(-135deg, transparent 10%, #04e6fb 10%, #65ff9a 100%) top
right,
linear-gradient(-45deg, transparent 10%, #04e6fb 10%, #65ff9a 100%) bottom
right,
linear-gradient(-135deg, #04e6fb 0, #65ff9a 90%, transparent 90%) top left,
linear-gradient(-45deg, #04e6fb 0, #65ff9a 90%, transparent 90%) bottom left;
background-repeat: no-repeat;
background-size: 90% 50%;
transform: translate(-50%, -50%);
}

/**
* @see {@link play.csssecrets.io/folded-corner-realistic}
*/
.note {
position: relative;
background: #58a; /* 回退样式 */
background: linear-gradient(-150deg, transparent 1.5em, #58a 0);
}

.note::before {
position: absolute;
top: 0;
right: 0;
width: 1.73em;
height: 3em;
content: '';
background: linear-gradient(
to left bottom,
transparent 50%,
rgb(0 0 0 / 20%) 0,
rgb(0 0 0 / 40%)
)
100% 0 no-repeat;
transform: translateY(-1.3em) rotate(-30deg);
transform-origin: bottom right;
}

Border triangle:

/* transparent border */
.arrow-up {
width: 0;
height: 0;
border-right: 16px solid transparent;
border-bottom: 20px solid #8888e8;
border-left: 16px solid transparent;
}

Clip path triangle:

/* clip path */
.arrow-right {
width: 20px;
height: 32px;
clip-path: polygon(0 0, 0 100%, 100% 50%);
background-color: #e888a3;
}

Pseudo element triangle:

/* pseudo element + hidden overflow */
.arrow-down {
position: relative;
width: 40px;
height: 40px;
overflow: hidden;
}

.arrow-down::before {
position: absolute;
top: 0;
left: 0;
display: block;
width: calc(40px / 1.41);
height: calc(40px / 1.41);
content: '';
background: #f7df6c;
transform: rotate(-45deg);
transform-origin: 0 0;
}

/**
* pseudo element + HTML5 entities:
* ◄ : &#9668;
* ► : &#9658;
* ▼ : &#9660;
* ▲ : &#9650;
*/
.arrow::before {
content: '&#9660';
}

Square

Background gradient square shape:

.checkerboard-linear-gradient {
background: #eee;
background-image: linear-gradient(
45deg,
rgb(0 0 0 / 25%) 25%,
transparent 0 75%,
rgb(0 0 0 / 25%) 0
),
linear-gradient(
45deg,
rgb(0 0 0 / 25%) 25%,
transparent 0 75%,
rgb(0 0 0 / 25%) 0
);
background-position:
0 0,
15px 15px;
background-size: 30px 30px;
}

.checkerboard-conic-gradient {
background: repeating-conic-gradient(#bbb 0, #bbb 25%, #eee 0, #eee 50%);
background-size: 30px 30px;
}

Polygon

Gradient Polygon

Background gradient polygon:

/**
* @see {@link play.csssecrets.io/bevel-corners-gradients}
*/
.polygon-background-corner {
background: #58a;
background:
linear-gradient(135deg, transparent 15px, #58a 0) top left,
linear-gradient(-135deg, transparent 15px, #58a 0) top right,
linear-gradient(-45deg, transparent 15px, #58a 0) bottom right,
linear-gradient(45deg, transparent 15px, #58a 0) bottom left;
background-repeat: no-repeat;
background-size: 50% 50%;
}

Clip Path Polygon

clip-path polygon:

.polygon {
/* 菱形 */
clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);

/* 矩形箭头 */
clip-path: polygon(75% 0%, 100% 50%, 75% 100%, 0% 100%, 25% 50%, 0% 0%);

/* 八边形 */
clip-path: polygon(
20px 0,
calc(100% - 20px) 0,
100% 20px,
100% calc(100% - 20px),
calc(100% - 20px) 100%,
20px 100%,
0 calc(100% - 20px),
0 20px
);
}
function polygon(n = 3) {
const deg = (2 * Math.PI) / n
const points = []

for (let i = 0; i < n; ++i) {
const theta = deg * i
const x = `${50 * Math.cos(theta) + 50}%`
const y = `${50 * Math.sin(theta) + 50}%`
points.push(`${x} ${y}`)
}

return `polygon(${points.join(',')})`
}

Transform Polygon

transform polygon:

/* 平行四边形 */
.button::before {
position: absolute;
inset: 0;
z-index: -1;
content: ''; /* 用伪元素来生成一个矩形 */
background: #58a;
transform: skew(45deg);
}

Chrome style tab:

/* 梯形 */
.tab::before {
position: absolute;
inset: 0;
z-index: -1;
content: ''; /* 用伪元素来生成一个矩形 */
background: #58a;
transform: scaleY(1.3) perspective(0.5em) rotateX(5deg);
transform-origin: bottom;
}

Filter and Blend Effects

Dark Mode Effect

html[theme='dark'] {
filter: invert(1) hue-rotate(180deg);
}

html[theme='dark'] img {
filter: invert(1) hue-rotate(180deg);
}

html {
transition:
color 300ms,
background-color 300ms;
}

Fusion Effect

  • Parent element: background-color + filter: contrast().
  • Child element: filter: blur().

Light, flame, rain drop emulation:

<div class="container">
<div class="circle circle-1"></div>
<div class="circle circle-2"></div>
</div>

<style>
.container {
background: #fff; /* Required */
filter: contrast(30);
}

.circle {
filter: blur(10px);
}
</style>

Frosted Glass Effect

毛玻璃效果 (bg-white/30 shadow-lg backdrop-blur-sm):

body {
background-image: url('https://images.unsplash.com/image');
background-position: center;
}

.card {
background-color: rgb(17 25 40 / 54%);
backdrop-filter: blur(12px) saturate(200%);
border: 1px solid rgb(255 255 255 / 12.5%);
border-radius: 12px;
}

.hero {
--inset-shadow: inset 0 0 1px 1px hsl(204deg 100% 90% / 100%);
--shadow: 10px 10px 60px 20px hsl(194deg 100% 9% / 50%);

background-color: hsl(27deg 10% 90% / 90%);
border: 1px solid hsl(176deg 87% 7% / 60%);
border-radius: 5px;
box-shadow: var(--inset-shadow), var(--shadow);
}

@supports (backdrop-filter: blur(25px) brightness(170%)) {
.hero {
background-color: hsl(27deg 10% 90% / 50%);
backdrop-filter: blur(25px) brightness(170%);
}
}

Gradient Text Effect

Gradient text:

.gradient-text {
position: relative;
color: black;
background: #fff;
}

.gradient-text::before {
position: absolute;
inset: 0;
content: '';
background: linear-gradient(to right, deepskyblue, deeppink);
mix-blend-mode: lighten;
}

.gradient-stroked-text {
position: relative;
color: #191325;
text-shadow:
1px 1px #fff,
-1px -1px #fff,
1px -1px #fff,
-1px 1px #fff;
background: #191325;
}

.gradient-stroked-text::after {
position: absolute;
inset: 0;
content: '';
background: linear-gradient(315deg, #78e56c, #127ac9);
mix-blend-mode: darken;
}

/**
* @see {@link https://codepen.io/Chokcoco/pen/jOwEqvR}
*/
.gradient-wave-text {
position: relative;
overflow: hidden;
font-size: 120px;
font-weight: bold;
color: #000;
background: #fff;
}

.gradient-wave-text::before,
.gradient-wave-text::after {
position: absolute;
top: -923px;
left: 50%;
z-index: 1;
width: 2000px;
height: 2000px;
content: '';
background: rgb(3 169 244 / 85%);
border-radius: 45% 48% 43% 47%;
mix-blend-mode: lighten;
transform: translate(-50%, -50%);
animation: rotate 10s infinite linear;
}

.gradient-wave-text::after {
border-radius: 43% 47% 44% 48%;
animation: rotate 10s infinite 0.5s linear;
}

@keyframes rotate {
0% {
transform: translate(-50%, -50%) rotate(0);
}

100% {
transform: translate(-50%, -50%) rotate(360deg);
}
}

Sun Effect

.sun-rise {
filter: contrast(0.34) brightness(1.6) sepia(1) hue-rotate(10deg);
filter: sepia(1) saturate(4) hue-rotate(295deg);
}

Night Effect

.night {
background: rgb(0 40 140 / 60%), url('./house-bed.jpg');
filter: brightness(80%) grayscale(20%) contrast(1.2);
background-size: 100%;
background-blend-mode: darken;
}

Movie Effect

.movie {
filter: contrast(1.1);
background-blend-mode: soft-light;
}

Old Effect

.old-1977 {
position: relative;
filter: contrast(1.1) brightness(1.1) saturate(1.3);
}

.old-1977::after {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
pointer-events: none;
content: '';
background: rgb(243 106 188 / 30%);
mix-blend-mode: screen;
}

Sketch Effect

.sketch {
width: 256px;
height: 171px;
background:
url('10.jpg') -2px -2px,
url('10.jpg');
filter: brightness(3) invert(1) grayscale(1);
background-size: 258px 173px;
background-blend-mode: difference;
}

Animation

Animated Dots

.dot {
display: inline-block;
height: 1em;
overflow: hidden;
line-height: 1;
text-align: left;
vertical-align: -0.25ex;
}

@media only screen and (prefers-reduced-motion: no-preference) {
.dot::before {
animation: dot1 3s infinite step-start both;
}
}

.dot::before {
display: block;
white-space: pre-wrap;
content: '...\A..\A.';
}

@keyframes dot1 {
33% {
transform: translateY(-2em);
}

66% {
transform: translateY(-1em);
}
}

Hover Animation

Fade Animation

Visual Fade Animation

.dropdown-drawer {
visibility: hidden;
opacity: 0;
transition:
opacity 0.2s linear,
visibility 0s linear 0.2s;
}

.is-open .dropdown-drawer {
visibility: visible;
opacity: 1;
transition-delay: 0s;
}

Fade In Animation

@keyframes fade-in {
from {
opacity: 0;
transform: rotateX(-90deg);
}

to {
opacity: 1;
transform: rotateX(0deg);
}
}

Fade In Out Animation

@keyframes fade-in-out {
0% {
opacity: 0;
}

50% {
opacity: 1;
}

100% {
opacity: 0;
}
}

Fade Mask Animation

Fade text:

p {
margin: auto;
font-family: 'Reggae One', cursive;
font-size: 48px;
color: #fff;
mask: radial-gradient(circle at 0 50%, #000, transparent 10%, transparent 0);
mask-size: 100%;
animation: scale 5s infinite;
}

.radial {
mask: radial-gradient(circle at 50% 0, #000, transparent 20%, transparent 0);
mask-size: 100% 100%;
animation: scale 5s infinite;
}

@keyframes scale {
50%,
100% {
mask-size: 100% 2000%;
}
}

Bounce Animation

/* transform-origin: top center */
@keyframes bounce-in {
0% {
opacity: 0;
transform: scale(0.5) translateY(-30px);
}

80% {
opacity: 1;
transform: scale(1.2);
}

100% {
opacity: 1;
transform: rotateY(0) translateY(0);
}
}

Rotate Animation

Rotate In Animation

/* transform-origin: top center */
@keyframes horizontal-rotate-in {
0% {
opacity: 0;
transform: rotateY(-90deg) translateY(30px);
}

100% {
opacity: 1;
transform: rotateY(0) translateY(0);
}
}

/* transform-origin: top right */
@keyframes rotate-right-in {
0% {
opacity: 0;
transform: rotate(-30deg) translateX(30px);
}

100% {
opacity: 1;
transform: rotate(0) translateX(0);
}
}

Circular Spin Animation

/**
* @see {@link play.csssecrets.io/circular}
*/
@keyframes spin {
from {
transform: rotate(0turn) translateY(-150px) translateY(50%) rotate(1turn);
}

to {
transform: rotate(1turn) translateY(-150px) translateY(50%) rotate(0turn);
}
}

.avatar {
width: 50px;
overflow: hidden;
border-radius: 50%;
animation: spin 3s infinite linear;
}

Fold Flip Animation

/* transform-origin: top center */
@keyframes fold-flip {
0% {
opacity: 0;
transform: rotateX(-90deg);
}

60% {
transform: rotateX(50deg);
}

100% {
opacity: 1;
transform: rotateX(0);
}
}

Accordion Animation

@media only screen and (prefers-reduced-motion: reduce) {
.menu {
transition: none;
}
}

.menu {
max-height: 0;
overflow: hidden;
opacity: 0;
transition:
max-height 0.3s,
opacity 0.3s;
}

.menu:focus-within,
.container:hover .menu {
max-height: 1em;
opacity: 1;
}

Slides Animation

.slide {
width: 500%;
overflow: hidden;
}

@keyframes slide {
0% {
margin-left: 0;
}

10% {
margin-left: 0;
}

12% {
margin-left: -100%;
}

22% {
margin-left: -100%;
}

24% {
margin-left: -200%;
}

34% {
margin-left: -200%;
}

36% {
margin-left: -300%;
}

46% {