@mixin  border-radius($radius){
    border-radius: $radius;
    -moz-border-radius: $radius;
    -webkit-border-radius: $radius;
}
@mixin transform($val) {
  -webkit-transform: $val;
  -moz-transform: $val;
  -ms-transform: $val;
  transform: $val;
}
@mixin border-top-radius($radius) {
  -webkit-border-top-right-radius: $radius;
  border-top-right-radius: $radius;
   -webkit-border-top-left-radius: $radius;
   border-top-left-radius: $radius;
   background-clip: padding-box;
}
@mixin border-right-radius($radius) {
  -webkit-border-bottom-right-radius: $radius;
  border-bottom-right-radius: $radius;
     -webkit-border-top-right-radius: $radius;
     border-top-right-radius: $radius;
     background-clip: padding-box;
}
@mixin border-bottom-radius($radius) {
  -webkit-border-bottom-right-radius: $radius;
  border-bottom-right-radius: $radius;
   -webkit-border-bottom-left-radius: $radius;
   border-bottom-left-radius: $radius;
   background-clip: padding-box;
}
@mixin border-left-radius($radius) {
  -webkit-border-bottom-left-radius: $radius;
  border-bottom-left-radius: $radius;
     -webkit-border-top-left-radius: $radius;
     border-top-left-radius: $radius;
     background-clip: padding-box;
}
@mixin box-sizing($val){
    -moz-box-sizing: $val;
    -webkit-box-sizing: $val;
    box-sizing: $val;
    
}