原文地址：https://segmentfault.com/a/1190000015389338
HTML code：
<!-- steamer: 蒸锅； lid: 盖子； pot: 锅 -->
<div class="steamer">
<div class="lid"></div>
<div class="pot"></div>
</div>
CSS code：
html, body {
margin:;
padding:;
}
body {
height: 100vh;
display: flex;
justify-content: center;
align-items: center;
background: linear-gradient(to right bottom, violet, midnightblue);
}
/* 定义.steamer容器尺寸 */
.steamer {
font-size: 10px;
width: 30em;
height: 30em;
border-radius: 50%;
/* border: 1px solid white;*/
background-color: snow;
/* 设置.steamer中的元素水平垂直居中而且是垂直排列 */
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
z-index:;
}
/* 画出锅（底座） */
.pot {
position: relative;
width: 16em;
height: 12em;
background: darkslateblue;
border-radius: 0.5em 0.5em 6.5em 6.5em;
/* 右边框造出的阴影 */
border-right: 1.5em solid midnightblue;
}
/* 画出锅把手 */
.pot::before {
content: '';
width: 27em;
height: 2.5em;
background-color: tomato;
position: absolute;
left: -4.75em;
top: 2em;
z-index: -1;
}
/* 为锅体增加光影 */
.pot::after {
content: '';
position: absolute;
width: 8em;
height: 8em;
border: 0.6em solid transparent;
border-radius: 50%;
border-left-color: white;
transform: rotate(-60deg);
top: 1em;
left: 2em;
}
/* 画出锅盖 */
.lid {
width: 17em;
height: 6em;
background-color: gold;
position: relative;
border-radius: 6em 6em 0 0;
border-right: 1.5em solid goldenrod;
/* 动画效果 */
transform: translateY(-0.5em);
animation: animate 1s infinite alternate;
}
@keyframes animate{
to{
transform: translateY(0.5em);
}
}
/* 画出锅盖上的钮扣把手 */
.lid::before {
content: '';
position: absolute;
width: 4em;
height: 4em;
background-color: tomato;
border-radius: 50%;
left: 7em;
top: -2.5em;
}
/* 为锅盖增加光影 */
.lid::after {
content: '';
position: absolute;
width: 7em;
height: 7em;
border: 0.6em solid transparent;
border-radius: 50%;
border-left-color: white;
transform: rotate(40deg);
top: 0.6em;
left: 2.5em;
}