在线展示：
矩形开关
圆形开关
代码：
<!-- 矩形开关 -->
<label class="switch">
<input type="checkbox">
<span class="slider"></span>
</label>
<!-- 圆形开关 -->
<label class="switch">
<input type="checkbox">
<span class="slider round"></span>
</label>
/* switch box */
.switch {
position: relative;
display: inline-block;
width: 60px;
height: 34px;
}
/* 隐藏默认 checkbox */
.switch input {
opacity: 0;
width: 0;
height: 0;
}
/* 开关 */
.slider {
position: absolute;
cursor: pointer;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: #ccc;
/* 过渡 */
-webkit-transition: .4s;
transition: .4s;
}
.slider:before {
position: absolute;
content: "";
height: 26px;
width: 26px;
left: 4px;
bottom: 4px;
background-color: white;
-webkit-transition: .4s;
transition: .4s;
}
/* 改变颜色 */
input:checked + .slider {
background-color: #2196F3;
}
input:focus + .slider {
box-shadow: 0 0 1px #2196F3;
}
/* 中心原点运动 */
input:checked + .slider:before {
-webkit-transform: translateX(26px);
-ms-transform: translateX(26px);
transform: translateX(26px);
}
/* 圆角 */
.slider.round {
border-radius: 34px;
}
.slider.round:before {
border-radius: 50%;
}