Gnome 3 (adwaita) scroll bars for the Atom text editor.

styles.less

@scrollbar-background-color: #d6d6d6;
@scrollbar-color: #9b9d9e;

.scrollbars-visible-always {
  ::-webkit-scrollbar {
    width: 13px;
    height: 13px;
  }

  ::-webkit-scrollbar-track,
  ::-webkit-scrollbar-corner {
    background: @scrollbar-background-color;
  }

  ::-webkit-scrollbar-thumb {
    background: @scrollbar-color;
    border: 3px solid @scrollbar-background-color;
    border-radius: 6.5px;
  }
}