.social-sat {
    position: fixed;
    left: 0px;
    top: 3px;
    z-index: 2000;
}

.social-sat ul {
    list-style: none;
    font-size: 24px;
    width: 90px;
}

.social-sat ul li a {
    display: inline-block;
    color: #fff;
    background: #000;
    padding: 6px 8px 4px 8px;
    text-decoration: none;
    -webkit-transition: all 500ms ease;
    -o-transition: all 500ms ease;
    transition: all 500ms ease;
}

.social-sat ul li .icon-facebook {
    background: #3b5998;
}

/* Establecemos los colores de cada red social, aprovechando su class */
.social-sat ul li .icon-mail {
    background: #666666;
}

.social-sat ul li .img {
    background: #193441;
}

.social-sat ul li a:hover {
    background: #00334d;
    padding: 6px 8px 4px 18px;
}