.wa-float {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 9999;
    display: none;
    line-height: 0;
    transition: transform .2s ease;
}

.wa-float:hover {
    transform: scale(1.08);
}

.wa-float img {
    width: 50px;
    height: 50px;
    display: block;
}

@media (max-width: 768px) {
    .wa-float {
        display: block;
        right: 15px;
        bottom: 15px;
    }
}