src/css/mixins/css3.less

.transform-origin (...) {
  -webkit-transform-origin: @arguments;
  -moz-transform-origin: @arguments;
  -ms-transform-origin: @arguments;
  -o-transform-origin: @arguments;
  transform-origin: @arguments;
}

.user-select (...) {
  -webkit-user-select: @arguments;
  -moz-user-select: @arguments;
  user-select: @arguments;
}

.box-shadow (...) {
  -webkit-box-shadow: @arguments;
  -moz-box-shadow: @arguments;
  box-shadow: @arguments;
}

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