message: Fix subpixel rendering Chrome bug in tooltips' triangles
diff: @@ -729,3 +729,14 @@ a.tabnav-extra[href$="mastering-markdown/"] {
  opacity: 0;
  }
  }
  +
  +/* Fix subpixel rendering Chrome bug in tooltips' triangles */
  +.tooltipped:hover::before,
  +.tooltipped:hover::after,
  +.tooltipped:active::before,
  +.tooltipped:active::after,
  +.tooltipped:focus::before,
  +.tooltipped:focus::after {
  + animation-fill-mode: backwards !important;
  + opacity: 1;
  +}
  