[2.1.什么是网页和网站](2.1.%E4%BB%80%E4%B9%88%E6%98%AF%E7%BD%91%E9%A1%B5%E5%92%8C%E7%BD%91%E7%AB%99.md) [2.2.网页浏览原理](2.2.%E7%BD%91%E9%A1%B5%E6%B5%8F%E8%A7%88%E5%8E%9F%E7%90%86.md) [2.3.什么是html](2.3.%E4%BB%80%E4%B9%88%E6%98%AFhtml.md) [2.4.html基本知识](2.4.html%E5%9F%BA%E6%9C%AC%E7%9F%A5%E8%AF%86.md) [2.5.综合案例](2.5.%E7%BB%BC%E5%90%88%E6%A1%88%E4%BE%8B.md)