body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Arial', sans-serif;
    background: url('https://images.unsplash.com/photo-1561047029-336fdee52d90') no-repeat center center fixed; 
    background-size: cover;
}

.overlay {
    background: rgba(0, 0, 0, 0.7); 
    color: white;
    text-align: center;
    padding: 50px;
    border-radius: 15px;
}

h1 {
    font-size: 4em;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 5px;
}

p {
    font-size: 2em;
    margin: 0;
}