Editor displaying blank screen

My editor seems to login perfectly but when I click to open collections in the editor is when I have issues, I only get a blank screen.

I tried using Microsoft edge and it displayed my collections in the editor first time but subsequently all I get is a blank screen.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Now it works. The last thing I did before it worked was reset all the styling in my body section