.button-backtotop { position: fixed; padding: 15px 20px 15px 20px; right: 0; bottom: 50px; color: #fff; font-size: 13px; background-color: #d70000; border-top-left-radius: 15px; border-bottom-left-radius: 15px; filter: alpha(opacity=70); opacity: 0.7; cursor: pointer; }
.button-backtotop[class~='hide'] { display: none; }
.button-backtotop[class~='visble'] { display: block; }

.list-main-menu .selected { color: #fff; background-color: #c00; }