37-css3文本两端对齐

<div class="box">你好好了</div>
<div class="box">你好</div>

.box {
  width: 100px;
  border: 1px solid #000;
  padding: 10px;
  text-align: justify;
  &:after {
    content: "";
    width: 100%;
    display: inline-block;
    overflow: hidden;
    height: 0;
  }
}