.image {
	position: relative;
}
.rb-tl {
	position: absolute;
	top: 0px;
	left: 0px;
	z-index: 999;
}
.rb-tr {
	position: absolute;
	top: 0px;
	right: 0px;
	z-index: 999;
}
.rb-bl {
	position: absolute;
	bottom: 0px;
	left: 0px;
	z-index: 999;
}
.rb-br {
	position: absolute;
	bottom: 0px;
	right: 0px;
	z-index: 999;
}