body { font-family: Arial, sans-serif; line-height: 1.6; margin: 0; background: #f4f4f4; } header { background: #008080; color: #fff; padding: 20px 0 10px 0; text-align: center; position: relative; } .logo { width: 100px; height: auto; margin-bottom: 10px; border-radius: 50%; box-shadow: 0 2px 6px rgba(0,0,0,0.12); } nav a { color: #fff; margin: 0 10px; text-decoration: none; font-weight: bold; } main { max-width: 800px; margin: 30px auto; background: #fff; padding: 20px; border-radius: 8px; } section { margin-bottom: 30px; } h1, h2 { margin-top: 0; } footer { background: #222; color: #fff; text-align: center; padding: 10px 0; margin-top: 20px; } ul { list-style: disc; margin-left: 20px; }