效果预览

源代码下载

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: 57em;     height: 71em;     font-size: 5px;     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: -3% 0, 103% 0; }  .stamp::after {     left: 1.5em;     background-repeat: repeat-x;     background-position: 0 -2.5%, 0 102.5%; }

在 html 文件中增加小鸡的 dom 元素，子元素分别表示头部、喙、身体、尾巴、腿、爪子、太阳、桔子：

<div class="stamp">     <div class="rooster">         <span class="head"></span>         <span class="beak"></span>         <span class="body"></span>         <span class="tail"></span>         <span class="leg"></span>         <span class="foot"></span>         <span class="sun"></span>         <span class="orange-stuff"></span>     </div> </div>

设置 grid 布局的行列尺寸：

.rooster {     display: grid;     grid-template-columns: 22.5em 13em 1.75em 14.5em 4.5em;     grid-template-rows: 12.5em 14.5em 15em 8em 5.5em;     background-color: wheat;     padding: 2em;     margin-top: -2em; }

画出扇形的头部：

.head {     grid-column: 4;     grid-row: 2;     background-color: burlywood;     border-top-left-radius: 100%; }

画出小鸡的眼睛和脸上的红晕：

.head {     position: relative; }  .head::after {     content: '';     position: absolute;     width: 2.8em;     height: 2.8em;     border-radius: 50%;     background-color: black;     right: 30%;     box-shadow: 2em 4em 4em rgba(255, 100, 0, 0.5); }

画出扇形的喙：

.beak {     grid-column: 5;     grid-row: 2;     height: 4.5em;     background-color: darkorange;     border-bottom-right-radius: 100%; }

画出半圆形的身体：

.body {     grid-column: 2 / 5;     grid-row: 3;     width: 30em;     background-color: saddlebrown;     border-radius: 0 0 15em 15em; }

用伪元素，通过阴影画出翅膀：

.body {     position: relative;     overflow: hidden; }  .body::after {     content: '';     position: absolute;     width: 20em;     height: 10em;     border-radius: inherit;     box-shadow: 4em 2em 4em rgba(0, 0, 0, 0.3);     left: calc((30em - 20em) / 2); }

画出扇形的尾巴：

.tail {     grid-column: 1;     grid-row: 1 / 3;     height: 22.5em;     background-color: burlywood;     align-self: end;     border-top-left-radius: 100%; }

画出扇形的腿：

.leg {     grid-column: 4;     grid-row: 4;     width: 8em;     background-color: burlywood;     border-bottom-right-radius: 100%; }

画出扇形的小爪子：

.foot {     grid-column: 4;     grid-row: 5;     width: 5.5em;     background-color: darkorange;     border-top-right-radius: 100%; }

画出半圆形的太阳：

.sun {     grid-column: 3 / 5;     grid-row: 1;     width: 17em;     --h: calc(17em / 2);     height: var(--h);     background-color: darkorange;     border-radius: 0 0 var(--h) var(--h); }

画出圆形的桔子和半圆形的叶片，注意此处叶片的画法与前面画半圆形的画法不同：

.orange-stuff {     grid-column: 1;     grid-row: 3 / 6;     width: 16em;     height: 16em;     background-color: darkorange;     align-self: end;     justify-self: end;     border-radius: 50%;     position: relative; }  .orange-stuff::before {     content: '';     position: absolute;     width: 8em;     height: 8em;     background: linear-gradient(45deg, transparent 50%, saddlebrown 50%);     border-radius: 50%;     top: -6.8em;     left: 10%; }

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">Rooster</span>         <span class="author">comehope</span>         <span class="face-value">120</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: brown; }

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!