Paired Tags

Paired tags consist of opening and closing tags. They can wrap around the content, group items in order to change some properties or collect elements by meaning.

Single tags

Single Tags consists of an opening tag. All content and behavior gets in form of attributes.

Tag nesting

When nesting tags, it's important to follow the hierarchy order, much like nesting dolls, while still following the rules of HTML syntax.

Let’s consider the next valid example:

<p> - defines a paragraph (parent element);
<a> - defines a hyperlink (child element);
<em> - marks text that has stress emphasis (child element);