At W3Schools you will find complete references about HTML elements, attributes, events, color names, entities, character-sets, URL encoding, language codes, HTTP messages, browser support, and more:

HTML is a markup language that web browsers use to interpret and compose text, images, and other material into visible or audible web pages. Default characteristics for every item of HTML markup are defined in the browser, and these characteristics can be altered or enhanced by the web page designer's additional use of CSS.

Introduction to HTML 3.0. HyperText Markup Language (HTML) is a simple markup system used to create hypertext documents that are portable from one platform to another. HTML documents are SGML documents with generic semantics that are appropriate for representing information from a wide range of applications.

在 W3School，我们提供完整的 HTML 参考手册，其中包括标签、属性、颜色、实体等等。

透過這篇文章，希望能幫助大家對 HTML 及其功能有基本的認識。 HTML 到底是什麼？ HTML 是一種 標記語言 （markup language），而非一般熟知的程式設計語言；它會告訴瀏覽器該如何呈現你的網頁 ── 單純簡易或是極其複雜的頁面都沒問題。 HTML 包含了一系列的 元素，而元素包含了 標籤 與內容，我們用標籤來控制內容的呈現樣貌，例如字體大小、斜體粗體、在文字或圖片設置超連結等。 舉例來說，請看看以下這個句子： 如果我們想讓這個句子自成一個段落，那麼 …

从基础的 html 到 css，乃至进阶的 xml、sql、js、php 和 asp.net。 从左侧的菜单选择你需要的教程！

What is HTML? HTML stands for Hyper Text Markup Language; HTML is the standard markup language for creating Web pages; HTML describes the structure of a Web page; HTML consists of a series of elements; HTML elements tell the browser how to display the content

Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.

html 是构建无障碍 web 应用的基础。在本部分中，您可以找到一些文章和资源，帮助您详细了解如何使用 html 构建可访问的网络应用。

How to participate in refining HTML 3.0; HTML 3.0 Overview; Transition strategy from HTML 2.0; Design Guidelines for HTML 3.0. Understanding HTML and MIME; Understanding HTML and SGML; The Structure of HTML 3.0 Documents; The HEAD Element and Related Elements; The BODY Elements. Banners; Divisions; Heading Elements; Paragraphs; Line Breaks ...