.favorite {

    width: 42px;
    height: 42px;
    border: 1px solid rgba(0, 0, 0, .1);
    border-radius: 50%;
    background: rgba(255, 255, 255, .9);
    font-size: 20px;
    transition: .25s;
    margin-right: 20px;
}

.favorite:hover {
    transform: scale(1.1);
}