自定义语法测试

<!-- run -->

<div id="app">
<template>
  <el-carousel :interval="5000" arrow="always">
    <el-carousel-item v-for="item in 4" :key="item">
      <h3>{{ item }}</h3>
    </el-carousel-item>
  </el-carousel>
</template>
</div>

<style>
@import url("//unpkg.com/element-ui@2.15.14/lib/theme-chalk/index.css");
.el-carousel__item h3 {
    color: #475669;
    font-size: 18px;
    opacity: 0.75;
    line-height: 300px;
    margin: 0;
  }
  
  .el-carousel__item:nth-child(2n) {
    background-color: #99a9bf;
  }
  
  .el-carousel__item:nth-child(2n+1) {
    background-color: #d3dce6;
  }

</style>

<script>
new Vue().$mount('#app')
</script>