通过CSS将元素定位在边框上

通过CSS将元素定位在边框上

<div class="myborder">
   <span class="title">dingwei</span>
</div>

span.title {
    display: block;
    position: relative;
    text-align: center;
    background: white;
    top: -10px;
    left: 30px;
    width: 150px;
}
.myborder{
  border: 1px solid black;
}

结果