.hero {
    position: relative;
    background: url('https://images.unsplash.com/photo-1556761175-5973dc0f32e7') no-repeat center center;
    background-size: cover;
    height: 100vh;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5); /* Change the color and opacity as needed */
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.features {
    padding: 60px 0;
}

.footer {
    background-color: #f8f9fa;
    padding: 30px 0;
    text-align: center;
}