Sass Facebook loading style

gistfile1.sass

=animation($name,$value)
  -webkit-animation-#{$name}: $value
	animation-#{$name}: $value

=keyframes($name)
	@-webkit-keyframes #{$name}
		@content
	@-moz-keyframes #{$name}
		@content
	@-ms-keyframes #{$name}
		@content
	@-o-keyframes #{$name}
		@content
	@keyframes #{$name}
		@content

.data_loading
	width: 20px
	margin: 0 auto
	.lb
		background-color: #eee
		float: left
		height: 14px
		margin-left: 1px
		width: 4px
		opacity: 0.1
		+animation(name,bounceG)
		+animation(duration,0.7s)
		+animation(iteration-count,infinite)
		+animation(direction,linear)
		+scale(0.7)
		&.lb1
			+animation(delay,0.20999999999999996s)

		&.lb2
			+animation(delay,0.27999999999999997s)

		&.lb3
			+animation(delay,0.35s)

+keyframes(bounceG)
	0%
		+opacity(1)
		+scale(1.2)
	100%
		+scale(0.7)
		+opacity(0.1)

awesome !!!!