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css实习三色交替背景

作者:互联网

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        p:nth-child(3n-2) {
            background:#ff0000;
        }
        p:nth-child(3n-1) {
            background:#0000ff;
        }
        p:nth-child(3n) {
            background:green;
        }
    </style>
</head>
<body>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
<p>x</p>
</body>
</html>

标签:nth,Title,交替,0000ff,3n,background,child,实习,css
来源: https://www.cnblogs.com/fly-book/p/16283275.html