body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f8f8;
    color: #333;
}

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

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 16px;
}

main {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    text-align: center;
    padding: 10px;
    background-color: #333;
    color: white;
    margin-top: 20px;
}


.social-links a {
    display: flex;
    align-items: center;
    font-size: 1.5rem; /* アイコンと文字を大きく */
    text-decoration: none;
    color: #333;
    padding: 10px 20px;
    border-radius: 8px;
    background: #f5f5f5;
    margin: 10px;
    transition: all 0.3s ease;
}

.social-links a i {
    font-size: 2rem; /* アイコンをさらに大きく */
    margin-right: 10px;
}

.social-links a:hover {
    background: #ddd;
    transform: scale(1.1);
}