cbjsxt-front-master/src/styles/triangle-mixin.scss

@charset "utf-8";
@mixin triangle($direction, $size, $borderColor) {
  content: '';
  height: 0;
  width: 0;

  @if $direction == top {
    border-bottom: $size solid $borderColor;
    border-left: $size dashed transparent;
    border-right: $size dashed transparent;
  } @else if $direction == right {
    border-left: $size solid $borderColor;
    border-top: $size dashed transparent;
    border-bottom: $size dashed transparent;
  } @else if $direction == bottom {
    border-top: $size solid $borderColor;
    border-left: $size dashed transparent;
    border-right: $size dashed transparent;
  } @else if $direction == left {
    border-right: $size solid $borderColor;
    border-top: $size dashed transparent;
    border-bottom: $size dashed transparent;
  }
}