对话框css3实现方式_html/css_WEB-ITnose

  #box { margin-left:80px; margin-top:20px; padding-left:20px; height: 60px;  background: #2aa1c8; position: relative;  border-radius:10px; border:1px solid #1c82a3;}#box:before{   content:"";   position: absolute;   right: 100%;   top: 16px;   width: 0;   height: 0;   border-top: 12px solid transparent;   border-right: 12px solid #1c82a3;   border-bottom: 12px solid transparent;}#box:after {   content:"";   position: absolute;   right: 100%;   top: 18px;   width: 0;   height: 0;   border-top: 10px solid transparent;   border-right: 10px solid #2aa1c8;   border-bottom: 10px solid transparent;}          


      
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