<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style type="text/css"> h3{ color: transparent; font-size: 60px; -webkit-text-stroke: 1px red; } .tab{ position: relative; } .tab>div{ width: 80px; height: 40px; line-height: 40px; text-align: center; float:left; /*border: #7CFC00 1px solid;*/ /*cursor: pointer;*/ } .tab>div>div{ width: 320px; height: 50px; /*border: salmon 1px solid;*/ position: absolute; top: 40px; left: 0px; display: none; border-radius: 0px 0px 8px 8px; } .tab>div:nth-child(1){ border-radius: 8px 0px 0px 0px; background-color: saddlebrown; } .tab>div:nth-child(2){ background-color: red; } .tab>div:nth-child(3){ background-color: chartreuse; } .tab>div:nth-child(4){ border-radius: 0px 8px 0px 0px; background-color: darksalmon; } .tab>div:nth-child(1)>div{ display: block; background-color: saddlebrown; } .tab>div:nth-child(2)>div{ display: none; background-color: red; } .tab>div:nth-child(3)>div{ display: none; background-color: chartreuse; } .tab>div:nth-child(4)>div{ display: none; background-color: darksalmon; } .tab>div:hover>div{ display: block; } </style> </head> <body> <h3>hello world</h3> <div class="tab"> <div> 选项卡1 <div> <span> 选项卡1文本... </span> </div> </div> <div> 选项卡2 <div> <span> 选项卡2文本... </span> </div> </div> <div> 选项卡3 <div> <span> 选项卡3文本... </span> </div> </div> <div> 选项卡4 <div> <span> 选项卡4文本... </span> </div> </div> </div> </body> </html>