.container {
    max-width: 900px;
    margin: 60px auto;
    padding: 40px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.section h1 {
    text-align: center;
    margin-bottom: 40px;
}
/* レスポンシブ */
@media (max-width: 768px) {
    .section h1 {
        font-size: 28px;
    }
}

h2 {
    margin-top: 40px;
    border-left: 5px solid #333;
    padding-left: 10px;
}

ul {
    padding-left: 20px;
}

.section {
    margin-bottom: 30px;
}