先看效果：
再看代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>滚筒按钮</title>
<style>
* {
border: 0;
box-sizing: border-box;
margin: 0;
padding: 0;
}
:root {
--hue: 223;
--bg: hsl(var(--hue),10%,90%);
--fg: hsl(var(--hue),10%,10%);
--trans-dur: 0.4s;
font-size: calc(40px + (60 - 40) * (100vw - 320px) / (2560 - 320));
}
body,
input {
color: var(--fg);
font: 1em/1.5 Helvetica, sans-serif;
}
body {
background-color: var(--bg);
display: flex;
height: 100vh;
transition:
background-color var(--trans-dur),
color var(--trans-dur);
}
.switch,
.switch__input,
.switch__handle-sides,
.switch__handle-side,
.switch__handle-labels,
.switch__handle-label,
.switch__handle-texture {
display: block;
}
.switch,
.switch__input {
cursor: pointer;
-webkit-tap-highlight-color: transparent;
}
.switch {
margin: auto;
position: relative;
width: 3em;
height: 3em;
}
.switch__input {
background-color: hsl(var(--hue),10%,95%);
border-radius: 0.25em;
box-shadow:
0.125em 0.125em 0.125em hsl(0,0%,100%) inset,
-0.125em -0.125em 0.125em hsl(var(--hue),10%,85%) inset,
0.125em 0.125em 0.375em hsl(var(--hue),10%,70%);
outline: transparent;
position: relative;
width: 100%;
height: 100%;
transition:
background-color var(--trans-dur),
box-shadow var(--trans-dur);
-webkit-appearance: none;
appearance: none;
}
.switch__input:before {
border-radius: inherit;
box-shadow: 0 0 0 max(0.125em,1px) hsla(var(--hue),90%,50%,0);
content: "";
display: block;
position: absolute;
inset: 0;
transition: box-shadow 0.15s linear;
}
.switch__input:focus-visible:before {
box-shadow: 0 0 0 max(0.125em,1px) hsla(var(--hue),90%,50%,1);
}
.switch__handle,
.switch__handle-sides,
.switch__handle-side,
.switch__handle-labels,
.switch__handle-label {
position: absolute;
}
.switch__handle,
.switch__handle-label {
transition: transform var(--trans-dur) cubic-bezier(0.65,0,0.36,1.6);
}
.switch__handle,
.switch__handle-sides,
.switch__handle-texture {
border-radius: 0.125em;
}
.switch__handle {
box-shadow: 0.25em 0.25em 0.25em hsla(var(--hue),10%,10%,0.4);
top: 10%;
left: 10%;
width: 40%;
height: 80%;
}
.switch__handle-sides,
.switch__handle-labels,
.switch__handle-texture {
width: 100%;
height: 100%;
}
.switch__handle-sides,
.switch__handle-side {
background-color: hsl(var(--hue),10%,85%);
transition:
background-color var(--trans-dur),
transform var(--trans-dur) cubic-bezier(0.65,0,0.36,1.6);
}
.switch__handle-sides {
--side-on: hsl(123,90%,40%);
background-image: linear-gradient(90deg,transparent 50%,var(--side-on) 50%);
overflow: hidden;
}
.switch__handle-side {
background-image: linear-gradient(90deg,var(--side-on) 50%,transparent 50%);
transform: translateX(-50%);
width: 200%;
height: 100%;
}
.switch__handle-labels {
transform-style: preserve-3d;
-webkit-user-select: none;
-moz-user-select: none;
user-select: none;
}
.switch__handle-label {
backface-visibility: hidden;
font-size: 0.6em;
text-shadow: 0 0 0.125em hsla(var(--hue),10%,10%,0.3);
line-height: 1;
top: 50%;
left: 50%;
text-align: center;
text-transform: uppercase;
transform: translate(-50%,-50%) rotateZ(90deg) rotateX(0) translateZ(0.55rem);
}
.switch__handle-label + .switch__handle-label {
color: hsl(0,0%,100%);
text-shadow: 0 0 0.125em hsla(0,0%,100%,0.3);
transform: translate(-50%,-50%) rotateZ(90deg) rotateX(180deg) translateZ(0.55rem);
}
.switch__handle-texture {
background-image:
linear-gradient(
90deg,
hsla(0,0%,100%,0),
hsla(0,0%,100%,0.3) 20%,
hsla(0,0%,100%,0) 40%,
hsla(0,0%,0%,0) 50%,
hsla(0,0%,0%,0.4)
);
box-shadow:
0 0.0625em 0.0625em hsla(0,0%,100%,0.3) inset,
0 -0.0625em 0.0625em hsla(0,0%,0%,0.3) inset;
transform: translateZ(0);
}
.switch__input:checked ~ .switch__handle {
transform: translateX(100%);
}
.switch__input:checked ~ .switch__handle .switch__handle-side {
transform: translateX(0);
}
.switch__input:checked ~ .switch__handle .switch__handle-label {
transform: translate(-50%,-50%) rotateZ(90deg) rotateX(180deg) translateZ(0.55rem);
}
.switch__input:checked ~ .switch__handle .switch__handle-label + .switch__handle-label {
transform: translate(-50%,-50%) rotateZ(90deg) rotateX(360deg) translateZ(0.55rem);
}
.switch__label {
overflow: hidden;
position: absolute;
width: 1px;
height: 1px;
}
/* Dark theme */
@media (prefers-color-scheme: dark) {
:root {
--bg: hsl(var(--hue),10%,30%);
--fg: hsl(var(--hue),10%,90%);
}
.switch__handle-sides,
.switch__handle-side {
background-color: hsl(var(--hue),10%,45%);
}
.switch__handle-label {
text-shadow: 0 0 0.125em hsla(var(--hue),10%,90%,0.3);
}
.switch__input {
background-color: hsl(var(--hue),10%,35%);
box-shadow:
0.125em 0.125em 0.125em hsl(var(--hue),10%,50%) inset,
-0.125em -0.125em 0.125em hsl(var(--hue),10%,25%) inset,
0.125em 0.125em 0.375em hsl(var(--hue),10%,20%);
}
}
</style>
</head>
<body>
<label class="switch">
<input class="switch__input" type="checkbox" role="switch">
<span class="switch__handle">
<span class="switch__handle-sides">
<span class="switch__handle-side"></span>
</span>
<span class="switch__handle-labels">
<span class="switch__handle-label" aria-hidden="true">Off</span>
<span class="switch__handle-label" aria-hidden="true">On</span>
</span>
<span class="switch__handle-texture"></span>
</span>
<span class="switch__label">Power</span>
</label>
</body>
</html>
