body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-image: url('burger-background.jpg');
    background-size: cover;
    color: white;
}

header {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 20px;
    text-align: center;
}

#menu, #burger-sizes {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 20px;
    margin: 20px;
}

ul {
    list-style-type: none;
    padding: 0;
}

li {
    margin-bottom: 10px;
}

h1, h2, h3 {
    margin: 0;
}

h1 {
    font-size: 36px;
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}