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4月26日作业CSS常用选择器
鲨鱼辣椒的博客
Original
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介绍关于css的一些常用选择器

实例

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>常用选择器</title>
    <style>
        /*标签选择器*/
        ul {
            border: 1px solid red;
            margin: 0 auto;
            padding-left: 0;
        
        }
        
        /*层级选择器;子代选择器*/
        ul li{
            list-style: none;
            width: 40px;
            height: 40px;
            background-color: aqua;
            display: inline-block;
            text-align: center;
            line-height: 40px;
            border-radius: 50%;
            margin-left: 10px;
            /*设置阴影*/
            box-shadow: 2px 3px 1px #888;
        }
        
        /*id选择器*/
        #bg-blue{
            background-color: blue;
        }
        
        /*类选择器*/
        .bg-green{
            background-color: green;
        }
        
        /*属性选择器*/
        li[id='bg-blue']{
            border: 2px solid red;
        }
        
        /*群组选择器*/
        #bg-blue,.bg-green{
            border: 2px solid black;
        }
        
        /*相邻选择器*/
        #bg-blue + li{
            /*background-color: yellow;*/
        }
        
        /*兄弟同级选择器*/
        #bg-blue ~*{
            background-color: yellow;
        }
    </style>
</head>
<body>
<ul>
    <li>1</li>
    <li id="bg-blue">2</li>
    <li class="bg-green">3</li>
    <li class="bg-green">4</li>
    <li>5</li>
    <li>6</li>
    <li>7</li>
    <li>8</li>
    <li>9</li>
    <li>10</li>
</ul>
</body>
</html>

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Correction status:Uncorrected

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