Adds a pseudo-element to help vertically align text labels in buttons/block-like links without using magic numbers https://ishadeed.com/article/button-label-alignment/

_vertically-align-label.scss

/// VERTICALLY ALIGN LABEL
/// Adds a pseudo-element to help vertically align
/// text labels in buttons/block-like links without
/// using magic numbers
/// More: https://ishadeed.com/article/button-label-alignment/
@mixin vertically-align-label() {
  &::before {
    content: '';
    display: inline-block;
    vertical-align: middle;
    height: 1ex;
  }
}

I just added ex units because using x-height for a height value feels more appropriate