now-playing/assets/scss/1-core/_00-mixins.scss

// --------------------------------------------------------------
// == mixins */
// --------------------------------------------------------------

@mixin flow($font-size, $bf: $base-font, $lh: $line-height) {
  $lh-value: $base-font * $lh;
  $coeff: ceil($font-size / $lh-value);
  $new-lh: ($lh-value / $font-size) * $coeff;
  $margin-bottom: $new-lh / $coeff;

  margin-bottom: $margin-bottom + em;
  font-size: $font-size / 10 + rem;
  line-height: $new-lh;
}


/* Glitch
-------------------------------------------------------------- */


@mixin textGlitch($name, $intensity, $background, $highlightColor1, $highlightColor2, $width, $height) {

  position: relative;
  $steps: $intensity;

  // Ensure the @keyframes are generated at the root level
  @at-root {
    // We need two different ones
    @for $i from 1 through 2 {
      @keyframes #{$name}-anim-#{$i} {
        @for $i from 0 through $steps {
          #{percentage($i*(1/$steps)) - 60} {
            clip: rect(
              random($height)+px,
              $width+px,
              random($height)+px,
              0
            );
          }
        }
      }
    }
  }
  &:before,
  &:after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: $background;
    clip: rect(0, 0, 0, 0);
  }
  &:after {
    left: 2px;
    text-shadow: -1px 0 $highlightColor1;
    animation: #{$name}-anim-1 2s infinite linear alternate-reverse;
  }
  &:before {
    left: -2px;
    text-shadow: 2px 0 $highlightColor2;
    animation: #{$name}-anim-2 3s infinite linear alternate-reverse;
  }
}