settled-merchant-master/src/styles/mixin.scss

// 混淆函数
// 处理倍图
@mixin bg-image ($url) {
  background-image: url($url + "@2x.png");
  //@media (-webkit-min-device-pixel-ratio: 3), (min-device-pixel-ratio: 3) {
  //  background-image: url($url + "@3x.png");
  //}
}
// 清除浮动
@mixin clearfix {
  &:after {
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
  }
}