I hate the page's layout too (So much 90s. So much text, lmao.), but I generally could ignore it. But the sidebar attached to the textbox in a table; I really couldn't ignore that. It just throws me off sfm when I'm working, even when I expand the box. So I figured it was time to just have my own code tester, since I'd been thinking about it for a while as it was.
(On a sidenote, Idk about other browsers, but times when Chrome would crash/my comp would shut down, Draac always had the code I was working on upon session restore, so I assume my tester will too.)