/* 清浮动模块 */
@mixin clearfix() {
  &:before,
  &:after {
    display: table;

    content: "";
  }

  &:after {
    clear: both;
  }
}

@mixin fl() {
  float: left;
}

@mixin fr() {
  float: right;
}

.fl {
  float: left;
}

.fr {
  float: right;
}

.clearfix {
  @include clearfix;
}