.butt:hover, .butt.hover {
    color: rgba(0,0,0,.6);
    background-color: #fff;
}

.butt.active {
    background-color: #d0d3d6;
    background-image: linear-gradient(rgba(0,0,0,.1), rgba(0,0,0,0));
    box-shadow: inset 0 0 2px rgba(0,0,0,.2), inset 0 2px 5px rgba(0,0,0,.2), 0 1px rgba(255,255,255,.2);
}