.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)),
                url('/Images/background.png') no-repeat center center/cover;
    height: 85vh;
    margin-top: 40;
}

.whatsapp-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25d366;
    color: white;
    padding: 12px 15px;
    border-radius: 50%;
    font-size: 24px;
    text-align: center;
    box-shadow: 0px 2px 5px rgba(0,0,0,0.3);
    cursor: pointer;
    z-index: 999;
    text-decoration: none;
}

.card {
    transition: transform 0.3s;
}
.card:hover {
    transform: translateY(-5px);
}