html
<div class="org_box"></div>
css
.org_box{
background-color: #575757;
width: 5.89rem;
min-height: 1.4rem;
position: relative;
border: 1px solid #fff;
color:#00FFC2;
font-size:.28rem;
line-height: .43rem;
padding:0 .5rem;
margin-left:0.02rem;
}
.org_box::before{
box-sizing: content-box;
position: absolute;
top: -18px;
left:0.1rem;
border-bottom:9px solid #575757;
border-top:9px solid transparent;
border-left:9px solid transparent;
border-right:9px solid transparent;
display: block;
content:'';
z-index: 2;
}
.org_box::after{
content:'';
box-sizing: content-box;
position: absolute;
top: -20px;
left:0.08rem;
border-bottom:10px solid #FFFFFF;
border-top:10px solid transparent;
border-left:10px solid transparent;
border-right:10px solid transparent;
display: block;
z-index:1
}
效果：
