body, html {
    margin: 0;
    padding: 0;
    overflow: hidden; 
    height: 100%; 
    width: 100%;
    font-family: Tahoma, sans-serif;
    color: white;
    text-align: center;
}

.background-container {
    height: 100vh; 
    width: 100vw;
    
    background-image: url('back-img.jpg');
    background-attachment: fixed;
    
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 20px;
}
.content {
    
    background: rgba(0, 0, 0, 0.5); 
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}
h1 {
    font-size: 5vw;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.192); 
}

p {
    font-size: 4vw;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
}