body {
	 background: url(imgs/ut-2.gif);
	 background-size: cover;
	/*
	 background-repeat: no-repeat;
	 background-position: center;
	 background-color: #fff;
	 */
}

.back-button {
	position:fixed;
	top: 0;
	left:0;
	padding: 40px;
}

.back-button a {
	transition-duration: .5s;
	 -webkit-transition-duration: .5s;
	-o-transition-duration: .5s;
	 -moz-transition-duration: .5s;
	 -ms-transition-duration: .5s;
}

.back-button a:hover {
	opacity: 0.5;
}

/* _______________________Medium Screens________________________ */


	 @media (min-width: 641px) and (max-width: 1025px) {

	 	.back-button {
		padding: 15px;
		}

			body {
			background-size: contain;
		}
	 }
  		


 /* _______________________Medium Screens________________________ */


	 @media only screen (min-width: 641px) and (max-width: 1025px) {

	 	.back-button {
		padding: 15px;
		}

			body {
			background-size: contain;
		}

	 	
	 }
  		

 /* ________________________Small Screens_______________________ */


	 @media only screen and (min-width: 321px) and (max-width: 640px) {

	 	.back-button {
		padding: 15px;
		}

			body {
			background-size: contain;
		}

}

/* __________________________Mobile Screens_______________________ */



@media only screen and (max-width: 320px) {
body {
	background-size: contain;
}

.back-button {
	padding: 15px;
}

}