Can I recover my website from an earlier version

I noticed yesterday, at first on my mobile device, that the site styles that I used were not being displayed on the site. All of the text was in some sort of default font.  I used Futura PT as my base. I tried changing the site style font and after that all of my customization of the different headings etc are gone.  I spent days tweaking the line heights, character weights and spacing etc.  Now all of that appears to be lost. I think that the original issue was that I had a small block of css in the custom css and somehow that block got changed in a way that it broke all of the css.  This is fixed but what I would like to do is to somehow recover the styles that I used on my site from two days ago.  Is there any way to do that? I do not see any versioning etc. in the tools that I have available with the site editor.