.radius(@value){
  -moz-border-radius: @value; border-radius: @value;
}
.rotate(@val)
{
  transform:rotate(@val);
  -ms-transform:rotate(@val); /* IE 9 */
  -webkit-transform:rotate(@val);
}
.opacity(@value){
  @filter: @value*100;
  opacity: @value; filter: alpha(opacity=@filter);
}
.box-sizing(@value){
  box-sizing:@value; -moz-box-sizing:@value;
}
.transition(@val){
  -webkit-transition: @val;
  -o-transition: @val;
  -moz-transition: @val;
  transition: @val;
}
.selection(@background,@color){
  ::selection{ background:@background; color:@color;}
  ::-moz-selection{ background:@background; color:@color;}
}
.perspective(@intensity,@origin){
  perspective: @intensity; -webkit-perspective: @intensity;
  perspective-origin: @origin; -webkit-perspective-origin: @origin;
  transform: perspective(@intensity); -ms-transform: perspective(@intensity); -moz-transform: perspective(@intensity);
}
.translate(@x,@y)
{
  -webkit-transform: translate(@x,@y);
  transform: translate(@x,@y);
}