#back-top {
	position: fixed;
	bottom: 30px;
	margin-left:1170px;
}
#back-top a { width: 60px; display: block; text-align: center; text-transform: uppercase; text-decoration: none; color: #666666; /* background color transition */
-webkit-transition: 1s; -moz-transition: 1s; transition: 1s; font: 11px/100% Arial, Helvetica, sans-serif; 
}
#back-top a:hover { color: #666; 
}
/* arrow icon (span tag) */
#back-top span { width: 60px; height: 60px; display: block; margin-bottom: 7px; background: #ddd url(up-arrow.png) no-repeat center center; /* rounded corners */
-webkit-border-radius: 15px; -moz-border-radius: 15px; border-radius: 15px; /* background color transition */
-webkit-transition: 1s; -moz-transition: 1s; transition: 1s; 
}
#back-top a:hover span { background: #ccc url(up-arrow.png) no-repeat center center;