//rem calculator
@function calculateRem($size) {
  $remSize: $size / 16px;
  @return #{$remSize}rem;
}

@function calculateEm($size) {
  $emSize: $size / 16px;
  @return #{$emSize}em;
}

@mixin fontSize($size) {
  font-size: $size; //Fallback in px
  font-size: calculateRem($size);
}