A website is a colection of documents (like your word documents). Unlike this, the documents that construct your website (web pages) are not independace. This are linked one with eachother.

The webpage are created with HTML. In the back of each web page stay the HTML code of the page. With the help of the HTML in pages can be introduce texts, images, links to other websites, lists, tables or forms.

Tehnology

HTML. All pages are made with html. This is not an programing language. With him the coder say what elements will be in the website, with help of keywords that coles tag-s. Near HTML, at the build of the webpages can be use others languages or technologis.

CSS. This is from Cascading Style Sheet. It separate the content from it's presentation on the screen. CSS can format all ements from a webpage and can be easy change whe you need it. For example we can made all titles from a website to be black and 10px. After a white we whant to change the color to orange. We just need to modify a line in the css and all titles from all page of the website will change. It's web standard and good for seo.

Flash. It is usualy use for animation and website with animation, sounds, mouvie. This can be use togheter with HTML or can be use independing. In full Flash websites are just a few tags in html that bring the flash aplication. The problem is it loads very hard on dial-up conection, and is very very bad read by search engine. Not good for website that needs visitors and SEO. In other way can be mixed with the html: the website it's made with html and animation it's made with flash.

Javascript. Unlike HTML this is a programing language. It is used with HTML. In HTMl can be introduce programs (scripts) write in Java Script. Are used for: pop-up windows, dinamic menus, images viewing, scroll texts, form validation. Java Scipt is a client-side language. This meen the Javascript are run by client (browser)

PHP and MySql. PHP is a programing language. Is what it name a server-side language are run by server. PHP it's used to make application like a: virtual shop, catalog, forum, search engine. It is used offen with MySql. MySql is a sistem of data bases created for internet. With him can be created complex data bases that can be interpreted by PHP programs.