@mixin button_border($rightbottom, $topleft) {
  border: $rightbottom;
  border-top: $topleft;
  border-left: $topleft;
}

@mixin col-count($colCount, $colSpacing) {
  column-count: $colCount;
  column-gap: $colSpacing;
  -webkit-column-count: $colCount;
  -webkit-column-gap: $colSpacing;
  -moz-column-count: $colCount;
  -moz-column-gap: $colSpacing;
}

@mixin size($height, $width) {
  height: $height;
  width: $width;
}

@mixin square($size) {
  @include size($size, $size);
}

@mixin border-radius($radius) {
  border-radius: $radius;
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
}

@mixin border-top-left-radius($radius) {
  border-top-left-radius: $radius;
  -webkit-border-top-left-radius: $radius;
  -moz-border-radius-topleft: $radius;
}

@mixin border-top-right-radius($radius) {
  border-top-right-radius: $radius;
  -webkit-border-top-right-radius: $radius;
  -moz-border-radius-topright: $radius;
}

@mixin border-bottom-right-radius($radius) {
  border-bottom-right-radius: $radius;
  -webkit-border-bottom-right-radius: $radius;
  -moz-border-radius-bottomright: $radius;
}

@mixin border-bottom-left-radius($radius) {
  border-bottom-left-radius: $radius;
  -webkit-border-bottom-left-radius: $radius;
  -moz-border-radius-bottomleft: $radius;
}

@mixin border-top-radius($radius) {
  @include border-top-right-radius($radius);
  @include border-top-left-radius($radius);
}

@mixin border-right-radius($radius) {
  @include border-top-right-radius($radius);
  @include border-bottom-right-radius($radius);
}

@mixin border-bottom-radius($radius) {
  @include border-bottom-right-radius($radius);
  @include border-bottom-left-radius($radius);
}

@mixin border-left-radius($radius) {
  @include border-top-left-radius($radius);
  @include border-bottom-left-radius($radius);
}

@mixin background-size($size){
  background-size: $size;
  -webkit-background-size: $size;
  -moz-background-size: $size;
  -o-background-size: $size;
}

@mixin box-sizing($boxsize) {
  box-sizing: $boxsize;
  -webkit-box-sizing: $boxsize;
  -moz-box-sizing: $boxsize;
}

@mixin horizontal-gradient($startColour, $endColour) {
  background-color: $endColour;
  background-image: linear-gradient(to right, $startColour, $endColour);
  background-image: -webkit-gradient(linear, 0 0, 100% 0, from($startColour), to($endColour));
  background-image: -webkit-linear-gradient(left, $startColour, $endColour);
  background-image: -moz-linear-gradient(left, $startColour, $endColour);
  background-image: -o-linear-gradient(left, $startColour, $endColour);
  background-repeat: repeat-x;
}

@mixin vertical-gradient($startColour, $endColour) {
  background-color: mix($startColour, $endColour, 60%);
  background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColour), to($endColour));
  background-image: -webkit-linear-gradient(top, $startColour, $endColour);
  background-image: -moz-linear-gradient(top, $startColour, $endColour);
  background-image: -o-linear-gradient(top, $startColour, $endColour);
  background-image: linear-gradient(to bottom, $startColour, $endColour);
  background-repeat: repeat-x;
}

@mixin box-shadow($a, $b, $c, $colour) {
  -moz-box-shadow: $a $b $c $colour;
  -webkit-box-shadow: $a $b $c $colour;
  box-shadow:  $a $b $c $colour;
}