Useful CSS3 LESS Mixins

【转自：】
.text-shadow (@string: 0 1px 3px rgba(0, 0, 0, 0.25)) {
text-shadow: @string;
}
.box-shadow (@string) {
-webkit-box-shadow: @string;
-moz-box-shadow:    @string;
box-shadow:         @string;
}
.drop-shadow (@x: 0, @y: 1px, @blur: 2px, @spread: 0, @alpha: 0.25) {
-webkit-box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
-moz-box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
box-shadow: @x @y @blur @spread rgba(0, 0, 0, @alpha);
}
.inner-shadow (@x: 0, @y: 1px, @blur: 2px, @spread: 0, @alpha: 0.25) {
-webkit-box-shadow: inset @x @y @blur @spread rgba(0, 0, 0, @alpha);
-moz-box-shadow:    inset @x @y @blur @spread rgba(0, 0, 0, @alpha);
box-shadow:         inset @x @y @blur @spread rgba(0, 0, 0, @alpha);
}


.box-sizing (@type: border-box) {
-webkit-box-sizing: @type;
-moz-box-sizing:    @type;
box-sizing:         @type;
}


.border-radius (@radius: 5px) {
-webkit-border-radius: @radius;
-moz-border-radius:    @radius;
border-radius:         @radius;


-moz-background-clip:    padding;
-webkit-background-clip: padding-box;
background-clip:         padding-box;
}
.border-radiuses (@topright: 0, @bottomright: 0, @bottomleft: 0, @topleft: 0) {
-webkit-border-top-right-radius:    @topright;
-webkit-border-bottom-right-radius: @bottomright;
-webkit-border-bottom-left-radius:  @bottomleft;
-webkit-border-top-left-radius:     @topleft;


-moz-border-radius-topright:        @topright;
-moz-border-radius-bottomright:     @bottomright;
-moz-border-radius-bottomleft:      @bottomleft;
-moz-border-radius-topleft:         @topleft;


border-top-right-radius:            @topright;
border-bottom-right-radius:         @bottomright;
border-bottom-left-radius:          @bottomleft;
border-top-left-radius:             @topleft;


-moz-background-clip:    padding; 
-webkit-background-clip: padding-box; 
background-clip:         padding-box; 
}


.opacity (@opacity: 0.5) {
-webkit-opacity: @opacity;
-moz-opacity: @opacity;
opacity: @opacity;
}


.gradient (@startColor: #eee, @endColor: white) {
background-color: @startColor;
background: -webkit-gradient(linear, left top, left bottom, from(@startColor), to(@endColor));
background: -webkit-linear-gradient(top, @startColor, @endColor);
background: -moz-linear-gradient(top, @startColor, @endColor);
background: -ms-linear-gradient(top, @startColor, @endColor);
background: -o-linear-gradient(top, @startColor, @endColor);
}
.horizontal-gradient (@startColor: #eee, @endColor: white) {
  background-color: @startColor;
background-image: -webkit-gradient(linear, left top, right top, from(@startColor), to(@endColor));
background-image: -webkit-linear-gradient(left, @startColor, @endColor);
background-image: -moz-linear-gradient(left, @startColor, @endColor);
background-image: -ms-linear-gradient(left, @startColor, @endColor);
background-image: -o-linear-gradient(left, @startColor, @endColor);
}


.animation (@name, @duration: 300ms, @delay: 0, @ease: ease) {
-webkit-animation: @name @duration @delay @ease;
-moz-animation:    @name @duration @delay @ease;
-ms-animation:     @name @duration @delay @ease;
}


.transition (@transition) {
-webkit-transition: @transition;  
-moz-transition:    @transition;
-ms-transition:     @transition; 
-o-transition:      @transition;  
}
.transform(@string){
-webkit-transform: @string;
-moz-transform: @string;
-ms-transform: @string;
-o-transform: @string;
}
.scale (@factor) {
-webkit-transform: scale(@factor);
-moz-transform: scale(@factor);
-ms-transform: scale(@factor);
-o-transform: scale(@factor);
}
.rotate (@deg) {
-webkit-transform: rotate(@deg);
-moz-transform: rotate(@deg);
-ms-transform: rotate(@deg);
-o-transform: rotate(@deg);
}
.skew (@deg, @deg2) {
-webkit-transform:       skew(@deg, @deg2);
-moz-transform: skew(@deg, @deg2);
-ms-transform: skew(@deg, @deg2);
-o-transform: skew(@deg, @deg2);
}
.translate (@x, @y:0) {
-webkit-transform:       translate(@x, @y);
-moz-transform: translate(@x, @y);
-ms-transform: translate(@x, @y);
-o-transform: translate(@x, @y);
}
.translate3d (@x, @y: 0, @z: 0) {
-webkit-transform:       translate3d(@x, @y, @z);
-moz-transform: translate3d(@x, @y, @z);
-ms-transform: translate3d(@x, @y, @z);
-o-transform: translate3d(@x, @y, @z);
}
.perspective (@value: 1000) {
-webkit-perspective: @value;
-moz-perspective: @value;
-ms-perspective: @value;
perspective: @value;
}
.transform-origin (@x:center, @y:center) {
-webkit-transform-origin: @x @y;
-moz-transform-origin:    @x @y;
-ms-transform-origin:     @x @y;
-o-transform-origin:      @x @y;
}