.error {
    color: red;
}

.success_msg,
.error_msg {
    display: none;
}

.whatsapp-float {
    position: fixed;
    width: 55px;
    height: 55px;
    bottom: 25px;
    right: 25px;
    background-color: #25D366;
    color: #fff;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.whatsapp-float:hover {
    background-color: #1ebe5d;
    color: #fff;
}