body {
    background-color: lightblue;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

.main {
    text-align: center;
    color: #333;
    font-size: 50px;
}

.nav {
    text-align: center;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    background: rgba(255,255,255,0.6);
    padding: 8px 12px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}