.bxr-button-up{width:44px;height:44px;position:fixed;border:0;box-shadow:none;z-index:50;bottom:0;display:none;opacity:.5;filter:alpha(opacity=50);border-radius:4px}.bxr-button-up.right{right:0}.bxr-button-up.left{left:0}.bxr-button-up:hover{opacity:1;filter:alpha(opacity=100)}.bxr-button-up>.fa{font-size:18px;margin-left:-1px}.bxr-button-up.absolute{position:absolute}