JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/element-ui/lib/index.js"></script>
<div id="app">
<el-button type="text" @click="dialogVisible = true">点击打开 Dialog</el-button>

<el-dialog custom-class="my-dialog" title="提示" v-model="dialogVisible" size="tiny">
  <span>这是一段信息</span>
  <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="dialogVisible = false">确 定</el-button>
  </span>
</el-dialog>
</div>

SCSS

@import url("//unpkg.com/element-ui/lib/theme-default/index.css");

.my-dialog .el-dialog__body {
  padding: 0;
}

Babel + JSX

var Main = {
    data() {
      return {
        dialogVisible: true
      };
    }
  };
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')