Basically, a lot of things you shouldn't do.

You really shouldn't use a crazy font like this all over your entire website.

This
<h3>
heading should definitely not be bigger than the above
<h2>
heading.

No one can see these words.

Who decided highlighting in red was a good idea? Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

C'mon, no one can even read this line.

Did you even know this entire line was a link?

You can also barely read this. Ouch!

Ok this is a heading

But it doesnt align with this paragraph text

or this one for that matter

This is just horrible.

Could you tell that this was a heading

and this was not?

Sorry not sorry. 😝