some fonts when all caps are difficult to center since height of the line takes has descenders included (even when they're not there) / CSS

vertical.scss

@mixin addTopOffsetToVisuallyCenter() {
  /** all caps don't look vertically centered, becase height of span (for Lasiver font at least) takes into accoutn descenders, even if they're not used
   **   so, that 'top' should counter that
   */
  position: relative; top: 0.15em;
}