child selector

There is also a more useful selector sub-selector, that is, the greater than symbol (>), which is used to select the first-generation child elements of the specified label element. For example, the code in the code editor on the right:

.food>li{border:1px solid red;}

This line of code will add a red solid border to the sub-element li (fruits, vegetables) under the class name food.

Continuing Learning

new file

<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>子选择符</title> <style type="text/css"> .food>li{border:1px solid red;}/*添加边框样式（粗细为1px，颜色为红色的实线）*/ </style> </head> <body> <p class="first">三年级时，<span>我还是一个<span>胆小如鼠</span>的小女孩</span>，上课从来不敢回答老师提出的问题，生怕回答错了老师会批评我。就一直没有这个勇气来回答老师提出的问题。学校举办的活动我也没勇气参加。</p> <h1>食物</h1> <ul class="food"> <li>水果 <ul> <li>香蕉</li> <li>苹果</li> <li>梨</li> </ul> </li> <li>蔬菜 <ul> <li>白菜</li> <li>油菜</li> <li>卷心菜</li> </ul> </li> </ul> </body> </html>

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Automatic operation

child selector

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