css 当文字过多时以....省略

<!-- 公告 -->

<p class="rst-promotion">公告: {{shopInfo.rst.promotion_info}}</p>

 

 

css

 80vw;
  font-size: 0.6rem;
  color: #999;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 2.266667vw auto 2.666667vw;
  padding: 0;
  white-space: nowrap;