/*750的psd px转rem*/
.px2rem(@name, @px) {
  @{name}: round(@px / 75, 2) * 1rem;
}
.px2px(@name, @px) {
  @{name}: round(@px / 2) * 1px;
  [data-dpr="2"] & {
    @{name}: @px * 1px;
  }
  // for mx3
  [data-dpr="2.5"] & {
    @{name}: round(@px * 2.5 / 2) * 1px;
  }
  // for Nexus
  [data-dpr="2.625"] & {
    @{name}: round(@px * 2.625 / 2) * 1px;
  }
  // for 小米note
  [data-dpr="2.75"] & {
    @{name}: round(@px * 2.75 / 2) * 1px;
  }
  [data-dpr="3"] & {
    @{name}: round(@px / 2 * 3) * 1px
  }
  // for 三星note4
  [data-dpr="4"] & {
    @{name}: @px * 2px;
  }
}
.opacity(@opacity) {
  @opacityIE: @opacity * 100;
  -ms-filter: ~"progid:DXImageTransform.Microsoft.Alpha(Opacity=@{opacityIE})"; // IE 8 & 9
  filter: ~"alpha(opacity=@{opacityIE})"; // IE 6 & 7
  opacity: @opacity;
}
.transform (@value) {
  -webkit-transform: @value;
  -moz-transform: @value;
  -ms-transform: @value;
  -o-transform: @value;
  transform: @value;
}