3- @mixin(函数)

1- @mixin(函数)

@mixin  wh {
    width:100px;
    height: 100px;
}
.one{
    @include wh;
}

2- 定义一个带默认参数的@mixin函数

/* 宏函数 */
@mixin  wh($w:100px,$h:100px){
    width:$w;
    height: $h;
}
.one{
    @include wh;
}
.two{
    @include wh(200px,300px);
}