1%hide-scroll-bar {
 2  &::-webkit-scrollbar {
 3    display: none; /* webkit */
 4  }
 5  -ms-overflow-style: none; /* IE 11 */
 6  scrollbar-width: none; /* Firefox 64 */
 7}
 8
 9.article {
10  @extend %hide-scroll-bar;
11}