body { font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif; line-height: 1.6; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; } h1 { font-size: 24px; color: #1a1a1a; border-bottom: 2px solid #4169e1; padding-bottom: 10px; margin-bottom: 25px; } h2 { font-size:…