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

@mixin rounded-corners-top($radius) {
  -webkit-border-top-left-radius:$radius;
  -webkit-border-top-right-radius:$radius;
   -khtml-border-radius-topleft:$radius;
   -khtml-border-radius-topright:$radius;
     -moz-border-radius-topleft:$radius;
     -moz-border-radius-topright:$radius;
          border-top-left-radius:$radius;
          border-top-right-radius:$radius;
}

@mixin rounded-corners-left($radius) {
  -webkit-border-top-left-radius:$radius;
  -webkit-border-bottom-left-radius:$radius;
   -khtml-border-radius-topleft:$radius;
   -khtml-border-radius-bottomleft:$radius;
     -moz-border-radius-topleft:$radius;
     -moz-border-radius-bottomleft:$radius;
          border-top-left-radius:$radius;
          border-bottom-left-radius:$radius;
}

@mixin rounded-corners-right($radius) {
  -webkit-border-top-right-radius:$radius;
  -webkit-border-bottom-right-radius:$radius;
   -khtml-border-radius-topright:$radius;
   -khtml-border-radius-bottomright:$radius;
     -moz-border-radius-topright:$radius;
     -moz-border-radius-bottomright:$radius;
          border-top-right-radius:$radius;
          border-bottom-right-radius:$radius;
}

@mixin box-shadow($x, $y, $radius, $opacity) {
  -webkit-box-shadow:$x $y $radius rgba(0, 0, 0, $opacity);
     -moz-box-shadow:$x $y $radius rgba(0, 0, 0, $opacity);
          box-shadow:$x $y $radius rgba(0, 0, 0, $opacity);
}

@mixin rotate($angle) {
  -webkit-backface-visibility:hidden;
  -webkit-transform:rotate($angle);
     -moz-transform:rotate($angle);
      -ms-transform:rotate($angle);
       -o-transform:rotate($angle);
          transform:rotate($angle);
}

@mixin noselect() {
  -webkit-touch-callout:none;
  -webkit-user-select:none;
  -khtml-user-select:none;
  -moz-user-select:none;
  -ms-user-select:none;
  user-select:none;
}