$maxMobileWidth: 640px;
$maxTabletWidth: 1079px;
$ultrawideMinWidth: 1600px;

// --- mobMaxW --- tabMaxW --------------- ultrawideMinW
//     mobile   |   tablet  |  desktop  |  ultrawide

@mixin forSize($size) {

  @if $size == mobile {
    @media screen and (max-width: $maxMobileWidth) { @content; } }
  @else if $size == tablet {
    @media screen and (min-width: $maxMobileWidth + 1) and (max-width: $maxTabletWidth) { @content; } }
  @else if $size == desktop {
    @media screen and (min-width: $maxTabletWidth + 1) and (max-width: $ultrawideMinWidth - 1) { @content; } }
  @else if $size == ultrawide {
    @media screen and (min-width: $ultrawideMinWidth) { @content; } }
  @else if $size == notMobile {
    @media screen and (min-width: $maxMobileWidth + 1) { @content; } }
}