小编man*_*ish的帖子

.container {
  display: table;
  border: 1px solid blue;
}
.line {
  padding-right: 20px;
  border-right: 1px solid #cfc7c0;
}
.first {
  display: table-cell;
  width: 30%;
}
.second {
  display: table-cell;
  width: 30%;
  padding-left: 10px;
}

<div class="container">
  <div class="first line">this is first div and some text</div>
  <div class="second">
    Right
    <br/>and more
    <br/>Side
  </div>
</div>