a.back-to-top{display:none;width:60px;height:60px;position:fixed;z-index:999;right:20px;bottom:80px;text-align:center;background:#337ab7 url("/static/spoken/images/up-arrow.png") no-repeat center;-webkit-border-radius:30px;-moz-border-radius:30px;border-radius:30px}