How to add an html element to tampermonkey
<p>I know how to program in Html/Css, Javascript, and jQuery. </p>

<p>Although, I just began programming inside of Tampermonkey so I'm not sure how to implement html/css into Tampermonkey. The scripts' purpose is to add to an already existing website, I already made it so it runs when I go on the website, but when I try doing it myself, nothing comes up. I already wrote the UserScript part and added the jQuery UI. </p>

<p>For starters, so I can just get the idea of how to do it, I would like to simply create a <code>&lt;div&gt;&lt;/div&gt;</code> element and using Css just simply make it a visible box over all the other elements on the page. </p>

<p>I have no idea how to start, but I'm thinking maybe appending a "div" into the body element of the website but I'm not sure how to do this and manipulating it.</p>