css;toolbar:false"><style>
#talkbubble {
  width: 160px; height: 80px;
  background: red;
  position: relative;
  border-radius: 10px;
  margin-left:20px;
}
#talkbubble:before {
  content: "";
  position: absolute;
  right: 100%; 
  top: 26px;
  border-top: 13px solid transparent;
  border-right: 26px solid red;
  border-bottom: 13px solid transparent;
}
</style>
<div id="talkbubble"></div>

    <div class="dialog-box">
                      <span class="bot"></span>
                      <span class="top"></span>
                    </div>

less:
      .dialog-box {
        position: relative;
        span {
          width:0; 
          height:0; 
          font-size:0; 
          overflow:hidden; 
          position:absolute;
          &.bot{
            border-width: 15px; 
            border-style: solid dashed dashed; 
            border-color: transparent transparent #F9743A transparent; 
            left: 15px; 
            top: -29px;
          }
          &.top{
            border-width:13px; 
            border-style:solid dashed dashed; 
            border-color:transparent transparent #fff transparent; 
            left:17px; 
            top:-25px;
          }
        }
      }