body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 20px; max-width: 800px; text-align: justify; } h1 { color: red; /* 赤文字 */ } h2 { color: #555; } p { margin-bottom: 15px; } ul { margin-bottom: 15px; } li { margin-bottom: 5px; } blockquote { background-color: #f9f9f9; border-left: 4p…