题解 | #CSS选择器——标签、类、ID选择器#
CSS选择器——标签、类、ID选择器
https://www.nowcoder.com/practice/f76f7b7cbc8a47188481b425380b0785
<html>
<head>
<meta charset=utf-8>
<style type="text/css">
/*补全代码*/
div{font-size:20px;}
div:first-of-type{color:rgb(255,0,0);}
.green{color:rgb(0,128,0);}
#black{color:rgb(0,0,0);}
</style>
</head>
<body>
<div>红色</div>
<div class='green'>绿色</div>
<div id='black'>黑色</div>
</body>
</html>
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