body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    font-family: Arial, sans-serif;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 20px;
    padding: 20px;
}

.grid-item {
    display: block;
    padding: 20px;
    background-color: #007bff;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.grid-item:hover {
    background-color: #0056b3;
}