https://github.com/comehope/front-end-daily-challenges
定义 dom,容器中包含场地,场地中再包含中线、中点、中圈、禁区、罚球点、罚球弧、球门区、角球区等元素:
<div class="container"> <div class="field"> <span class="halfway-line"></span> <span class="centre-circle"></span> <span class="centre-mark"></span> <span class="penalty-area"></span> <span class="penalty-mark"></span> <span class="penalty-arc"></span> <span class="goal-area"></span> <span class="corner-arc"></span> </div> </div>
居中显示:
body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background: radial-gradient(sandybrown, maroon); }
定义容器尺寸:
.container { width: 120em; height: 80em; background-color: green; font-size: 5px; } .container span { display: block; }定义线型:
.container { --line: 0.3em solid white; }画出场地边线:
.container { padding: 5em; } .field { width: inherit; height: inherit; border: var(--line); }画出中线:
.halfway-line { width: calc(120em / 2); height: 80em; border-right: var(--line); }画出中圈:
.field { position: relative; } .centre-circle { width: 20em; height: 20em; border: var(--line); border-radius: 50%; position: absolute; top: calc((80em - 20em) / 2); left: calc((120em - 20em - 0.3em) / 2); }画出中点:
.centre-mark { width: 2em; height: 2em; background-color: white; border-radius: 50%; position: absolute; top: calc(80em / 2 - 1em); left: calc(120em / 2 - 1em + 0.3em / 2); }画出禁区:
.penalty-area { width: 18em; height: 44em; border: var(--line); position: absolute; top: calc((80em - 44em) / 2); left: -0.3em; }画出罚球点:
.penalty-mark { width: 2em; height: 2em; background-color: white; border-radius: 50%; position: absolute; top: calc(80em / 2 - 1em); left: calc(12em - 1em); }画出罚球弧:
.penalty-arc { width: 20em; height: 20em; border: var(--line); border-radius: 50%; position: absolute; top: calc((80em - 20em) / 2); left: calc(12em - 20em / 2); }隐藏罚球弧左侧弧线,只留右侧弧线:
.field { z-index: 1; } .penalty-area { background-color: green; } .penalty-arc { z-index: -1; }画出球门区:
.goal-area { width: 6em; height: 20em; border: var(--line); position: absolute; top: calc((80em - 20em) / 2); left: -0.3em; }画出角球区:
.field { overflow: hidden; } .corner-arc::before, .corner-arc::after { content: ''; position: absolute; width: 5em; height: 5em; border: 0.3em solid white; border-radius: 50%; --offset: calc(-5em / 2 - 0.3em); left: var(--offset); } .corner-arc::before { top: var(--offset); } .corner-arc::after { bottom: var(--offset); }把 dom 中的子元素复制出一份,左右两侧各一份:
<div class="container"> <div class="field"> <div class="left"> <span class="halfway-line"></span> <span class="centre-circle"></span> <span class="centre-mark"></span> <span class="penalty-area"></span> <span class="penalty-mark"></span> <span class="penalty-arc"></span> <span class="goal-area"></span> <span class="corner-arc"></span> </div> <div class="right"> <span class="halfway-line"></span> <span class="centre-circle"></span> <span class="centre-mark"></span> <span class="penalty-area"></span> <span class="penalty-mark"></span> <span class="penalty-arc"></span> <span class="goal-area"></span> <span class="corner-arc"></span> </div> </div> </div>右侧的样式与左侧相同,只需要水平翻转即可:
.right { position: absolute; top: 0; left: 50%; transform: rotateY(180deg); }大功告成!
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