SOURCE

<div class="content">
  <a href="javascript:void(0);">
    <div class="c_l">hello</div>
    <div class="c_r">bone</div>
  </a>
</div>

*{
  padding:0;
  margin:0;
}
.content{
  position: relative;
    width: 100%;
    height: 30px;
    font-size:20px;
    margin: 0 auto;
    border-bottom: 1px solid #d9d9d9;
  a{
        width: 93.75%;
        margin: 0 auto;
        height: 30px;
        font-size: 20px;
        //display:block;
        display: -webkit-box;
        text-decoration:none;
    .c_l{
    -webkit-box-flex: 1;
    -moz-box-flex: 1;
    -o-box-flex: 1;
    -ms-box-flex: 1;
    width: 1px;
   
    color: #333;
    line-height:30px;
  }
  .c_r{
    width: 6.9rem;
    color: #999;
    line-height: 30px;
    text-align: right;
    margin-right: 60px;
  }
  }
}