elementUI的柵格布局

el-row代表行,里面嵌套el-col，

el-row里面有gutter屬性，屬性為數字，則gutter前面加冒號,gutter屬性代表el-col的間隔

el-col里面有span屬性，span為x，則分成24/x列

el-col里必須有div，不然span分割無效

例子：

<template>
<div>
<el-row :gutter="20">
  <el-col :span="6"><div class="test">1</div></el-col>
  <el-col :span="6"><div class="test">1</div></el-col>
  <el-col :span="6"><div class="test">1</div></el-col>
  <el-col :span="6"><div class="test">1</div></el-col>
</el-row>
</div>
</template>
<script>
export default {
  name: "HelloWolrd",
  data () {
    return {
    };
  }
}
</script>
<style lang="css" scoped>
.test{
  background-color: red;
  color: #fff;
}
</style>

效果：