HTML

1. basic knowledge of computers
2. basic knowledge of internet
3. basic knowledge of web browsing
4. even the slightest desire to understand web design
5. elementary reading skills

HTML stands for Hyper Text Markup Language. HTML is the standard markup language for web documents.

HTML5 is the current version of HTML.

Web browsers (such as Chrome or Internet Explorer) received HTML documents from a web server (or other source) and render the information from these documents into web pages.

HTML utilizes structural semantics for text. These include headings, paragraphs, lists, links, quotes, images, videos, audio clips, and more.

For example, to denote that a piece of text is the main title for the page, the opening h1 tag <h1> will indicate the beginning of the main title, and the h1 closing tag </h1> will indicate the end of the main title: <h1>The Main Title</h1>

Some tags are self-closing, such as the <img> tag.

HTML attributes are placed inside the opening tags to modify the element.

An example of this is the id attribute. The id attribute creates a unique, document-wide identifier.

CSS stands for cascading style sheets. CSS is used to describe or format the the presentation of a document written in markup language.

For example, CSS code h1{color:red;} will make main title, the h1 title, appear red.