[css] 使用css实现彩虹的效果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>彩虹</title>
<style>
.rainbow-wrap {
width: 500px;
height: 500px;
background-color: red;
position: relative;
left: 20px;
top: 20px;
border-radius: 100%;
}
.rainbow-wrap::after {
content: '';
width: 500px;
height: 250px;
background-color: white;
position: absolute;
bottom: 0;
}
.rainbow-wrap::before {
content: '';
width: 200px;
height: 200px;
background-color: white;
position: absolute;
bottom: 0;
border-radius: 100%;
top: 150px;
z-index: 10;
left: 150px;
}
.rainbow-wrap .rainbow-item {
position: absolute;
width: 400px;
height: 400px;
border-radius: 100%;
background-color: yellow;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.rainbow-item:nth-child(2) {
background-color: blue;
width: 300px;
height: 300px;
}
.rainbow-item:nth-child(3) {
background-color: green;
width: 200px;
height: 200px;
}
</style>
</head>
<body>
<div class="rainbow-wrap">
<div class="rainbow-item"></div>
<div class="rainbow-item"></div>
<div class="rainbow-item"></div>
</div>
</body>
</html>
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