I have a ul nested in the fourth li in the picture. When setting the background color of the li in the nested ul, I cannot always nest all the nested uls into the li.
How to solve it?
The fourth li display: table;
Set ul, li padding: 0
The fourth li display: table;
<html lang='en'> <head> <meta charset='utf-8'> <title>ul-study</title> <style type="text/css"> .ul-01{list-style-type: none;} .ul-01>li{float: left;margin: 5px;padding: 3px 10px; background-color: red;cursor: pointer;border-radius: 5px;} .ul-02{list-style-type: none;margin: 0px;} .ul-02>li{margin: 3px 0px;mbackground-color: blue;padding: 0px 10px;width: 100%;background-color: blue;} </style> <script type="text/javascript"> window.onload=function(){ var ulss=document.getElementById('ul-02-s'); function lish(para){ var lis=document.getElementsByName('lis'); for(var i=0;i<lis.length;i++){ lis[i].style.display=para; } } ulss.onmouseover=function(){ lish("block"); } ulss.onmouseout=function(){ lish("none"); } } </script> </head> <body> <ul class='ul-01'> <li>bbb</li> <li>aaa</li> <li>ccc</li> <li style='padding:0px 0px;display:table;'> <ul class='ul-02' id='ul-02-s'> <li>请选择</li> <li class='li-sh' name='lis'>111</li> <li class='li-sh' name='lis'>222</li> <li class='li-sh' name='lis'>333</li> </ul> </li> </ul> </body></html>
Set ul, li padding:0
.ul-02>li{margin: 3px 0px;mbackground-color: blue;padding: 0px 10px;background-color: blue;}
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