.contato_whats {
    position: fixed;
    bottom: 40px;
    right: 15px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #25d366;
    transition: 0.5s;
    cursor: pointer;
    z-index: 1000;
}
.contato_whats span {
    color: transparent;
}

@media (min-width: 500px) {

.contato_whats:hover {
    width: 300px;
    border-radius: 15px;
}

.contato_whats:hover span {
    transition: 1s;
    color: white;
    display: flex;
    font-size: 20px;
    color: white;
    position: fixed;
    bottom: 56px;
    font-weight: 800;
    right: 30px;
}
}