index.css

/* Reset some default styles for the page */
body, h1, h2, p, ul {
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0; /* Add this to reset body margin */
}

header {
    background-color: hsl(210, 38%, 67%);
    color: #fff;
    text-align: center;
    padding: 1rem 0;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1rem;
}

main {
    display: flex;
    justify-content: space-between;
    margin: 2rem;
}

#menu, #order {
    background-color: #fff;
    padding: 1rem;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    flex: 1;
}

#menu {
    max-width: 60%;
    overflow-y: auto;
}

#order {
    max-width: 35%;
    position: relative; /* Add this for position reference */
    padding-bottom: 4em;
}

#menu h3, #order h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

#menu ul, #order ul {
    list-style: none;
    padding: 0;
}

#menu li, #order li {
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s ease; /* Add this for the animation */
}

#order-total {
    font-weight: bold;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background-color: #333;
    color: #fff;
    position: fixed; /* Add this to fix the footer at the bottom */
    bottom: 0; /* Add this to position it at the bottom */
    width: 100%; /* Add this to span the full width */
}