lolbox.duowan.com/mbox/sass/base/_mixins.scss

@charset "UTF-8";

$vari : 750 / 640;

@function px2rem($size){
	@return $size / 20 / 2 / $vari + rem;
}
@function -px2rem($size){
    @return - $size / 20 / 2 / $vari + rem;
}

@mixin reset{
	margin: 0;
	padding: 0;
}
@mixin inline-block{
	display: inline-block;
	*display: inline;
	*zoom: 1;
}
@mixin clearfix{
	*zoom: 1;
	&:before,
	&:after{
		content: "";
		display: table;
		line-height: 0;
	}
	&:after{
		clear: both;
	}
}
/* 弹性盒子webkit-box */
@mixin webkitbox( $type : 1 ){
  display: -webkit-box;
  @if $type == 1{ -webkit-box-orient: horizontal; }//水平
  @if $type == 2{ -webkit-box-orient: vertical; }//垂直
}
@mixin flex($flex){//设置盒子大小
  -webkit-box-flex: $flex;
}

@mixin size($value) {
	width: $value;
	height: $value;
}
@mixin size($width, $height) {
	width: $width;
	height: $height;
}
@mixin hide-text{
	text-indent: 100%;
	white-space: nowrap;
	overflow: hidden;
}
@mixin break {
	-ms-word-break: break-all;
	word-break: break-all;
	word-break: break-word;
}
/* 文字溢出 */
@mixin ellipsis {
    white-space: nowrap;
    overflow: hidden;
    -ms-text-overflow: ellipsis;
    -o-text-overflow: ellipsis;
    text-overflow: ellipsis;
}
@mixin pre {
	white-space: pre-wrap;
    white-space: -moz-pre-wrap;
    white-space: -pre-wrap;
    white-space: -o-pre-wrap;
    word-wrap: break-word;
}
@mixin wrap {
	text-wrap: wrap;
	white-space: pre-wrap;
	white-space: -moz-pre-wrap;
	word-wrap: break-word;
}
// http://www.hicss.net/solve-change-line-in-css/
@mixin nowrap {
	white-space: nowrap;
	word-break: keep-all;
}
@mixin opacity($opacity) {
	opacity: $opacity;
	filter: alpha(opacity=#{$opacity * 100});
}
@mixin min-height($height) {
	min-height: $height;
	height: auto !important;
	_height: $height;
}
/* 旋转 */
@mixin rotate($value:180deg){
  -webkit-transform: rotate($value);
     -moz-transform: rotate($value);
      -ms-transform: rotate($value);
          transform: rotate($value);
}
/* css角标 */
@mixin u-arrow-left($value:6px,$bordercolor:#fff){
  border-width: $value;
  border-color: transparent $bordercolor transparent transparent;
  border-style: solid;
}
// Gradients  添加渐变过渡函数，20140110 add by petsa
@mixin gradient($color-form, $color-to) {
  background: $color-form; // Old browsers
  background: -moz-linear-gradient(top, $color-form 0%, $color-to 100%); // FF3.6+
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,$color-form), color-stop(100%,$color-to)); // Chrome,Safari4+
  background: -webkit-linear-gradient(top, $color-form 0%, $color-to 100%); // Chrome10+,Safari5.1+
  background: -o-linear-gradient(top, $color-form 0%, $color-to 100%); // Opera 11.10+
  background: -ms-linear-gradient(top, $color-form 0%, $color-to 100%); // IE10+
  background: linear-gradient(to bottom, $color-form 0%, $color-to 100%); // W3C
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='$color-form', endColorstr='$color-to',GradientType=0 ); // IE6-9

}

//三角朝上
@mixin triangle-up($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color;
	border-color: transparent transparent $color;
}

//三角朝下
@mixin triangle-down($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color;
	border-color: $color transparent transparent;
}

//三角朝左
@mixin triangle-left($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color;
	border-color: transparent $color transparent  transparent;
}

//三角朝右
@mixin triangle-right($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color;
	border-color: transparent transparent transparent $color;
}

//左上三角形
@mixin triangle-topleft($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color; 
	border-color: $color transparent transparent $color; 
}

//右上三角形
@mixin triangle-topright($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color; 
	border-color: $color $color transparent transparent; 
}

//左下三角形
@mixin triangle-bottomleft($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color; 
	border-color: transparent transparent $color $color; 
}

//右下三角形
@mixin triangle-bottomright($width,$color){
	width: 0; 
	height: 0; 
	border: $width solid $color; 
	border-color: transparent $color  $color transparent; 
}