效果预览按下右侧的“点击预览”按钮可以在当前页面预览，点击链接可以全屏预览。https://codepen.io/comehope/pen/YOoXpv可交互视频此视频是可以交互的，你可以随时暂停视频，编辑视频中的代码。请用 chrome, safari, edge 打开观看。https://scrimba.com/p/pEgDAM/c7KdMt8源代码下载每日前端实战系列的全部源代码请从 github 下载：https://github.com/comehope/front-end-daily-challenges代码解读定义 dom，容器表示邮票：<div class=“stamp”></div>居中显示：body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background-color: teal;}设置容器尺寸：.stamp { position: relative; width: 45em; height: 63em; font-size: 6px; padding: 5em; background-color: white;}用重复背景绘制出邮票的齿孔：.stamp { display: flex; flex-direction: column; align-items: center; justify-content: center;}.stamp::after,.stamp::before { content: ‘’; width: 100%; height: 100%; position: absolute; background: radial-gradient(circle, teal 50%, transparent 50%), radial-gradient(circle, teal 50%, transparent 50%); background-size: 3.5em 3.5em;}.stamp::before { top: 1.5em; background-repeat: repeat-y; background-position: -4% 0, 104% 0;}.stamp::after { left: 1.5em; background-repeat: repeat-x; background-position: 0 -3%, 0 103%;}在 html 文件中增加小鸡的 dom 元素，子元素分别表示耳朵、头部、身体、尾巴下部、尾巴上部、腿、爪子：<div class=“stamp”> <div class=“squirrel”> <div class=“ear”></div> <div class=“head”></div> <div class=“body”></div> <div class=“tail-start”></div> <div class=“tail-end”></div> <div class=“leg”></div> <div class=“foot”></div> </div></div>设置 grid 布局的行列尺寸：.squirrel { display: grid; grid-template-columns: 11.5em 7em 15.5em 10.5em; grid-template-rows: 13em 5em 11.5em 22.5em; background-color: silver; padding: 2em; margin-top: -2em;}画出扇形的头部：.head { grid-column: 1; grid-row: 3; background-color: chocolate; border-bottom-left-radius: 100%;}用径向渐变画出眼睛：.head { background-image: radial-gradient( circle at 58% 22%, black 1.4em, transparent 1.4em );}画出扇形的耳朵：.ear { grid-column: 2; grid-row: 2; width: 5em; background-color: bisque; border-bottom-right-radius: 100%;}画出扇形的身体：.body { grid-column: 2 / 4; grid-row: 4; background-color: chocolate; border-top-right-radius: 100%; position: relative; overflow: hidden;}用伪元素，通过阴影画出蜷曲的腿：.body::before { content: ‘’; position: absolute; width: 100%; height: 50%; box-shadow: 2em -2em 4em rgba(0, 0, 0, 0.3); bottom: 0; –w: calc((7em + 15.5em) / 2); border-top-left-radius: var(–w); border-top-right-radius: var(–w);}画出半圆形的小爪子：.foot { grid-column: 1; grid-row: 4; height: 4em; width: 8em; background-color: saddlebrown; justify-self: end; align-self: end; border-radius: 4em 4em 0 0; filter: brightness(0.8);}画出半圆形的尾巴下部：.tail-start { grid-column: 4; grid-row: 4; –h: calc(22.5em - 1.5em); height: var(–h); background-color: bisque; align-self: end; border-radius: 0 var(–h) var(–h) 0;}画出半圆形的尾巴上部：.tail-end { grid-column: 3; grid-row: 1 / 5; –h: calc(13em + 5em + 11.5em + 1.5em); height: var(–h); background-color: chocolate; border-radius: var(–h) 0 0 var(–h);}在 dom 中再增加一些文本，包括标题、作者和面值：<div class=“stamp”> <div class=“puppy”> <!– 略 –> </div> <p class=“text”> <span class=“title”>Squirrel</span> <span class=“author”>comehope</span> <span class=“face-value”>200</span> </p></div>设置标题的文字样式：.text { position: relative; width: calc(100% + 2em * 2); height: 6em; font-family: sans-serif;}.text .title { position: absolute; font-size: 6em; font-weight: bold; color: darkslategray;}设置作者的文字样式：.text .author { position: absolute; font-size: 3em; bottom: -1.2em; color: dimgray;}设置面值的文字样式：.text .face-value { position: absolute; font-size: 14em; right: 0; line-height: 0.9em; color: darkcyan;}大功告成!