#side-background {
	position:fixed; z-index: -1; right: -150px; bottom: 0; width: 500px; height: 400px;
	overflow: hidden;
}
#side-background img {
	max-width: 100%;
}

@media screen and (max-width: 860px) {
	#side-background {
		display: none;
	}
}