CSS下划线展开效果
文章描述:
css鼠标放上去下划线展开效果
html
<div id="underline"></div>css
#underline {
   width:200px;
   height:50px;
   background:#ddd;
   margin:20px;
   position:relative;
}
#underline:after {
   content:"";
   width:0;
   height:1px;
   background:red;
   position:absolute;
   bottom:0;
   left:0;
   transition:all.8s;
}
#underline:hover:after {
   left:0%;
   width:100%;
}发布时间:2021/07/27 
                
            
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