.float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 35px;
    right: 20px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    /*box-shadow: 2px 2px 2px #333;*/
    z-index: 100;
}

a.colores:hover {
    color: #2e3b9d;
}