11: Use H1 - H6 Tags. Admittedly, this is something I tend to slack on. It's best practice to use all six of these tags. If I'm honest, I usually only implement the top four; but I'm working on it! :) For semantic and SEO reasons, force yourse

The vast majority of tags must be opened (<tag>) and closed (</tag>) with the element information such as a title or text resting between the tags. When using multiple tags, the tags must be closed in the order in which they were opened .

Line Break Tag. Whenever you use the <br /> element, anything following it starts from the next line. This tag is an example of an empty element, where you do not need opening and closing tags, as there is nothing to go in between them. The <br /