#whatsapp_btn {
    position: fixed;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #25d366;
    bottom: 110px;
    right: 30px;
    z-index: 9999;
    border-radius: 50%;
    box-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#whatsapp_btn:hover {
    transform: scale(1.1);
    box-shadow: 2px 4px 16px rgba(0,0,0,0.4);
}

#whatsapp_btn svg {
    width: 34px;
    height: 34px;
}