body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    background: #f4f4f4;
}

header {
    text-align: center;
    padding: 40px 20px;
}

h1 {
    margin: 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    padding: 30px;
    max-width: 1200px;
    margin: auto;
}

.card {
    background: white;
    padding: 30px;
    text-align: center;
    border-radius: 12px;
    text-decoration: none;
    color: black;
    font-size: 18px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 18px rgba(0,0,0,0.15);
}