body, html {
    margin: 0;
    padding: 0;
    height: 100%;
    font-family: Arial, sans-serif;
}
.fullscreen-background {
    height: 100%;
    background: url('../images/background.jpg') no-repeat center center;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}
h1 {
    font-size: calc(8vw + 8vh);
    font-weight: bold;
    text-align: center;
}