This article mainly shares with you how to write CSS flat and son-level styles, which is more suitable for beginners. Friends who are learning CSS can refer to it
input:checked ol:This is about when inoput After it has checked, it is the same style owned by OL.
input:checked ol>li: The greater than in li: refers to the li style of the son's generation under the same level OL after inoput has checked, and the grandchild's generation will not inherit it.
Html code
<!DOCTYPE html> <html lang="zh-cn"> <head> <meta charset="utf-8" /> <title>用户界面(UI)元素状态伪类选择符 E:checked_CSS参考手册_web前端开发参考手册系列</title> <style type="text/css"> input[type=radio]:checked + span{background:blue;} input[type=radio]:checked + span:after{content:" 我被选中了";} input[type=checkbox]:checked + span{background:#f00;} input[type=checkbox]:checked + span:before{content:" 我被选中了";} p.classFather > p.classSon p.classSon{ background-color: lightgray; line-height: 40px; } p.classFather > p.classSon > p.classSonS > p.classSonC { background-color: lightgray; line-height: 40px; } </style> </head> <body> <form method="post" action="#"> <fieldset> <legend>选中下面的项试试</legend> <ul> <li><label><input type="radio" name="colour-group" value="0" /><span>蓝色</span></label></li> <li><label><input type="radio" name="colour-group" value="1" /><span>红色</span></label></li> <li><label><input type="radio" name="colour-group" value="2" /><span>黑色</span></label></li> </ul> </fieldset> <fieldset> <legend>选中下面的项试试</legend> <ul> <li><label><input type="checkbox" name="colour-group2" value="0" /><span>蓝色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="1" /><span>红色</span></label></li> <li><label><input type="checkbox" name="colour-group2" value="2" /><span>黑色</span></label></li> </ul> </fieldset> <fieldset> <legend>子节点样式</legend> <p class="classFather"> <p class="classSon">孩子 <p class="classSon">孙子 <p class="classSon">重孙子</p> </p> </p> <p class="classSon">孩子 <p class="classSonS">孙子 <p class="classSonC">重孙子</p> </p> </p> </p> </fieldset> </form> </body> </html>
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