.gradient (@start-color, @end-color, @start-location: 0%,  @end-location: 100%)  {
	background-image: linear-gradient(to bottom, @start-color @start-location, @end-color @end-location);
}
.gradient-h (@start-color, @end-color, @start-location: 0%,  @end-location: 100%)  {
	background-image: linear-gradient(to right, @start-color @start-location, @end-color @end-location);
}