Useful sass mixins

useful-sass.scss

#fluid type between a small and large screen size / small & large font size

@mixin fluid-type($min-vw, $max-vw, $min-font-size, $max-font-size) {
  $u1: unit($min-vw);
  $u2: unit($max-vw);
  $u3: unit($min-font-size);
  $u4: unit($max-font-size);

  @if $u1 == $u2 and $u1 == $u3 and $u1 == $u4 {
    & {
      font-size: $min-font-size;
      @media screen and (min-width: $min-vw) {
        font-size: calc(
          #{$min-font-size} + #{strip-unit($max-font-size - $min-font-size)} *
            ((100vw - #{$min-vw}) / #{strip-unit($max-vw - $min-vw)})
        );
      }
      @media screen and (min-width: $max-vw) {
        font-size: $max-font-size;
      }
    }
  }
}

//fix overflow not being honored by child elements in safari (put on parent):
-webkit-mask-image: -webkit-radial-gradient(white, black);