.scrollable(){
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}
.flexbox() {
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
}
.flex-wrap(@fw) when (@fw = nowrap) {
    -webkit-box-lines: single;
    -moz-box-lines: single;
    -webkit-flex-wrap: nowrap;
    -ms-flex-wrap: none;
    -ms-flex-wrap: nowrap;
    flex-wrap: nowrap;
}
.flex-wrap(@fw) when (@fw = wrap) {
    -webkit-box-lines: multiple;
    -moz-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}
.flex-wrap(@fw) when not (@fw = wrap) and not (@fw = nowrap) {
    -webkit-flex-wrap: @fw;
    -ms-flex-wrap: @fw;
    flex-wrap: @fw;
}
.flex-shrink(@fs) {
    -webkit-flex-shrink: @fs;
    -ms-flex: 0 @fs auto;
    flex-shrink: @fs;
}
.justify-content(@jc) when (@jc = flex-start) {
    -webkit-box-pack: start;
    -ms-flex-pack: start;
    -webkit-justify-content: flex-start;
    justify-content: flex-start;
}
.justify-content(@jc) when (@jc = flex-end) {
    -webkit-box-pack: end;
    -ms-flex-pack: end;
    -webkit-justify-content: flex-end;
    justify-content: flex-end;
}
.justify-content(@jc) when (@jc = space-between) {
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
}
.justify-content(@jc) when not (@jc = flex-start) and not (@jc = flex-end) and not (@jc = space-between) {
    -webkit-box-pack: @jc;
    -ms-flex-pack: @jc;
    -webkit-justify-content: @jc;
    justify-content: @jc;
}
.align-items(@ai) when (@ai = flex-start) {
    -webkit-box-align: start;
    -ms-flex-align: start;
    -webkit-align-items: flex-start;
    align-items: flex-start;
}
.align-items(@ai) when (@ai = flex-end) {
    -webkit-box-align: end;
    -ms-flex-align: end;
    -webkit-align-items: flex-end;
    align-items: flex-end;
}
.align-items(@ai) when not (@ai = flex-start) and not (@ai = flex-end) {
    -webkit-box-align: @ai;
    -ms-flex-align: @ai;
    -webkit-align-items: @ai;
    align-items: @ai;
}
.align-content(@ai) {
    -ms-flex-line-pack: @ai;
    -webkit-align-content: @ai;
    align-content: @ai;
}
.align-self(@as) {
    -ms-flex-item-align: @as;
    -webkit-align-self: @as;
    align-self: @as;
}
.clearfix() {
    &:before,
    &:after {
        content: " ";
        display: table;
    }
    &:after {
        clear: both;
    }
}
.hairline(@position, @color) when (@position = top) {
    &:before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: auto;
        right: auto;
        height: 1px;
        width: 100%;
        background-color: @color;
        display: block;
        z-index: 15;
        transform-origin: 50% 0%;
        @media only screen and (-webkit-min-device-pixel-ratio: 2) {
          transform: scaleY(0.5);
        }
        @media only screen and (-webkit-min-device-pixel-ratio: 3) {
            transform: scaleY(0.33);
        }
    }
}
.hairline(@position, @color) when (@position = left) {
    &:before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: auto;
        right: auto;
        width: 1px;
        height: 100%;
        background-color: @color;
        display: block;
        z-index: 15;
        transform-origin: 0% 50%;
        @media only screen and (-webkit-min-device-pixel-ratio: 2) {
            transform: scaleY(0.5);
        }
        @media only screen and (-webkit-min-device-pixel-ratio: 3) {
            transform: scaleY(0.33);
        }
    }
}
.hairline(@position, @color) when (@position = bottom) {
    &:after {
        content: '';
        position: absolute;
        left: 0;
        bottom: 0;
        right: auto;
        top: auto;
        height: 1px;
        width: 100%;
        background-color: @color;
        display: block;
        z-index: 15;
        transform-origin: 50% 100%;
        @media only screen and (-webkit-min-device-pixel-ratio: 2) {
            transform: scaleY(0.5);
        }
        @media only screen and (-webkit-min-device-pixel-ratio: 3) {
            transform: scaleY(0.33);
        }
    }
}
.hairline(@position, @color) when (@position = right) {
    &:after {
        content: '';
        position: absolute;
        right: 0;
        top: 0;
        left: auto;
        bottom: auto;
        width: 1px;
        height: 100%;
        background-color: @color;
        display: block;
        z-index: 15;
        transform-origin: 100% 50%;
        @media only screen and (-webkit-min-device-pixel-ratio: 2) {
            transform: scaleY(0.5);
        }
        @media only screen and (-webkit-min-device-pixel-ratio: 3) {
            transform: scaleY(0.33);
        }
    }
}
// For right and bottom
.hairline-remove(@position) when not (@position = left) and not (@position = top) {
    &:after {
        display: none;
    }
}
// For left and top
.hairline-remove(@position) when not (@position = right) and not (@position = bottom) {
    &:before {
        display: none;
    }
}
// For right and bottom
.hairline-color(@position, @color) when not (@position = left) and not (@position = top) {
    &:after {
        background-color: @color;
    }
}
// For left and top
.hairline-color(@position, @color) when not (@position = right) and not (@position = bottom) {
    &:before {
        background-color: @color;
    }
}

// Encoded SVG Background
.encoded-svg-background(@svg) {
    @url: `encodeURIComponent(@{svg})`;
    background-image: url("data:image/svg+xml;charset=utf-8,@{url}");
}

// Preserve3D
.preserve3d() {
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

//from ratchet
.linear-gradient(@color-from, @color-to) {
  background-color: @color-from; // Old browsers
  background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%,@color-from), color-stop(100%,@color-to)); // Chrome, Safari4+
  background-image: -webkit-linear-gradient(top, @color-from 0%, @color-to 100%);           // Chrome10+, Safari5.1+
  background-image:    -moz-linear-gradient(top, @color-from 0%, @color-to 100%);           // FF3.6+
  background-image:     -ms-linear-gradient(top, @color-from 0%, @color-to 100%);           // IE10+
  background-image:      -o-linear-gradient(top, @color-from 0%, @color-to 100%);           // Opera 11.10+
  background-image:         linear-gradient(to bottom, @color-from 0%, @color-to 100%);     // W3C
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#{@color-from}', endColorstr='#{@color-to}', GradientType=0 ); // IE6-9
}
.directional-gradient(@color-from, @color-to, @deg: 45deg) {
  background-color: @color-from; // Old browsers
  background-image: -webkit-gradient(linear, left bottom, right top, color-stop(0%,@color-from), color-stop(100%,@color-to)); // Chrome, Safari4+
  background-image: -webkit-linear-gradient(@deg, @color-from 0%, @color-to 100%);           // Chrome10+, Safari5.1+
  background-image:    -moz-linear-gradient(@deg, @color-from 0%, @color-to 100%);           // FF3.6+
  background-image:     -ms-linear-gradient(@deg, @color-from 0%, @color-to 100%);           // IE10+
  background-image:      -o-linear-gradient(@deg, @color-from 0%, @color-to 100%);           // Opera 11.10+
  background-image:         linear-gradient(@deg, @color-from 0%, @color-to 100%);     // W3C
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#{@color-from}', endColorstr='#{@color-to}', GradientType=1 ); // IE6-9
}

.hairline(@type, @color, @offset) when (@type = single) {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100%' height='1'><rect fill='#{@color}' x='0' y='0' width='100%' height='0.5'/></svg>");
  background-position: @offset 100%;
}
.hairline(@type, @color, @offset) when (@type = double) {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100%' height='1'><rect fill='#{@color}' x='0' y='0' width='100%' height='0.5'/></svg>"),
                      url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100%' height='1'><rect fill='#{@color}' x='0' y='0' width='100%' height='0.5'/></svg>");
    background-position: @offset 100%, @offset 0;
  background-repeat: no-repeat;
}


//已删除的mixin
/*.transition(@d) {
    -webkit-transition-duration: @d;
    transition-duration: @d;
}
.delay(@d) {
    -webkit-transition-delay: @d;
    transition-delay: @d;
}
.transform(@t) {
    -webkit-transform: @t;
    transform: @t;
}
.transform-origin(@to) {
    -webkit-transform-origin: @to;
    transform-origin: @to;
}
.translate3d(@x:0, @y:0, @z:0) {
    -webkit-transform: translate3d(@x,@y,@z);
    transform: translate3d(@x,@y,@z);
}
.animation(@a) {
    -webkit-animation: @a;
    animation: @a;
}
.border-box(){
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.box-shadow(@bs) {
    -webkit-box-shadow: @bs;
    box-shadow: @bs;
}
.animation-name(@name) {
  -webkit-animation-name: @name;
     -moz-animation-name: @name;
          animation-name: @name;
}
.animation-duration(@duration) {
  -webkit-animation-duration: @duration;
     -moz-animation-duration: @duration;
          animation-duration: @duration;
}
.animation-direction(@direction) {
  -webkit-animation-direction: @direction;
     -moz-animation-direction: @direction;
          animation-direction: @direction;
}
*/