body {
    font-family: monospace;
    background-color: #f0f0f0;
    color: #333;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header,
footer {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    text-align: center;
}

nav a:not(:hover) {
    text-decoration: none;
}

.container {
    flex: 1;
    padding: 20px;
    max-width: 800px;
    margin: 20px auto;
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.product-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.product-list>* {
    border: 1px solid #eee;
    padding: 10px;
}
