WkMessage/public/assets/less/tinycss.less

.make-margin-padding(margin, m, 5px, 4);
.make-margin-padding(padding, p, 5px, 4);

.make-margin-padding(@type, @prefix, @space, @i) when (@i >= 0) {
  .make-margin-padding(@type, @prefix, @space, @i - 1);
  @pixel: @space * @i;
  .@{prefix}-@{i} {
      @{type}-top: @pixel !important;
      @{type}-right: @pixel !important;
      @{type}-bottom: @pixel !important;
      @{type}-left: @pixel !important;
  }
  .@{prefix}t-@{i} {
      @{type}-top: @pixel !important;
  }
  .@{prefix}r-@{i} {
      @{type}-right: @pixel !important;
  }
  .@{prefix}b-@{i} {
      @{type}-bottom: @pixel !important;
  }
  .@{prefix}l-@{i} {
      @{type}-left: @pixel !important;
  }
  .@{prefix}x-@{i} {
      @{type}-left: @pixel !important;
      @{type}-right: @pixel !important;
  }
  .@{prefix}y-@{i} {
      @{type}-top: @pixel !important;
      @{type}-bottom: @pixel !important;
  }
}