【Sass】混入mixin

mixin就相当于js中的函数，对一些样式进行了封装，减少代码的编写。

混合宏无法重载，参数可以设置默认值。

<template>
  <div id="app">
    <div></div>
    <div></div>
    <div></div>
  </div>
</template>

<script>
    export default {
        name: 'App'
    }
</script>

<style lang="scss">
  //无参混合宏
  @mixin app-border{
    border: 1px solid red;
    border-radius: 4px;
  }
  //带参混合宏
  @mixin div-border($radius,$boder-size:2px){
    border: $boder-size solid blue;
    border-radius: $radius;
  }

  #app{
    @include app-border;
    height: 100px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    
    div{
      @include div-border(50%);
      height: 50px;
      width: 50px;
    }
  }

</style>

附上混合宏与集成、占位符的区别