The way it is structured a HTML document is defined by 3 tags that should be mandatory (or almost). These are: 1. : whatever you put between these tags will indicate that it is written in HTML language, if not put these tags your browser won’t know to read it, since you will not be told what HTML. You must not put anything out of them. 2 : Is a preprocessor, i.e. browsers read information that is within these tags before displaying the page. It is very useful for the moment that you want to include your site to search engines, since they generally use it. Is the most important tag that is placed within this the
: this tag I believe that it is the most important of the entire document since this is the section where the content, this is what will be displayed in browsers. All these together tags are written like this: