new Vue().$mount('#app')
<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/element-ui@2.14.1/lib/index.js"></script>
<div id="app">
<template>
<el-input v-model="input" placeholder="请输入内容"></el-input>
</template>
</div>
@import url("//unpkg.com/element-ui@2.14.1/lib/theme-chalk/index.css");