css设置标签背景

1.返回按钮

<div class="back" @click="backAction"></div>

.back{    position: absolute;    left: 10px;    top: 13px;    background: url("../../assets/content/[e-mail]");    background-size: 16px 24px;    background-repeat: no-repeat;    width: 16px;    height: 24px;  }

2.背景100%

<div class="left" @click="contentDidClick(3)">      <span class="title">健康记录</span>      <span class="subtitle">记录您的健康生活</span></div>

.content .top .left{      background: url("../../assets/content/[e-mail]");      background-size: 100% 100%;      background-repeat: no-repeat;      margin-right: 1px;  }