tabs最右边添加一个按钮

<div style='position: relative;'>
  <el-tabs v-model="activeName" @tab-click="handleClick" type="border-card">
    <el-tab-pane label="Tab页签标题1" name="first">Tab页签内容1</el-tab-pane>
    <el-tab-pane label="Tab页签标题2" name="second">Tab页签内容2</el-tab-pane>
  </el-tabs>
    <el-button size='mini' style='position: absolute;right:10px;top:5px;'>右边按钮</el-button>
  </div>

el-tabs组件的宽度

  .data-tabs-add /deep/ .el-tabs__nav-wrap {
      width: 60%;
  }