SOURCE

<div>
  <span>姓名</span><br/>
  <span>联系方式</span>
</div>

div{
  border:1px solid red;
  font-size:20px;
}
span{
  border:1px solid green;
  display:inline-block;
  width:90px;
  text-align:justify;
  line-height:20px;
  height:20px;
  overflow:hidden;
}
span::after{
  content:"";
  display:inline-block;
  width:100%;
  border:1px solid blue;
}