@mixin scrollBar {
  ::-webkit-scrollbar-track-piece {
     background-color: transparent;
 }
  ::-webkit-scrollbar {
     width: 7px;
     height: 7px;
     background-color: transparent;
 }
  ::-webkit-scrollbar-thumb {
     border-radius: 5px;
     background-color: hsla(220, 4%, 58%, .3);
 }
}
