Travel to Vietnam body font-family: Arial, sans-serif; line-height: 1.6; margin: 0; padding: 20px; color: #333; h1, h2, h3 color: #2c3e50; a color: #3498db; text-decoration: none; a:hover text-decoration: underline; ul, ol margin: 10px 0; padding-left: 20px; li margin-bottom: 8px;