A tag is created by putting the tag names in angle brackets, like this: <tag>. The word in brackets, in this case tag, is the tag name. Tags contain an opening tag and a closing tag. An opening tag contains only the tag name in angle brackets . A closing tag precedes the tag name with a forward slash. For example: <table></table>. If a tag contains no data, then the opening and closing tags can be combined, as in <br/>.
Tags can contain attributes that give further information about them. HTML5 attributes are ...