Backlight suddenly broken (narrow columns)?

There are a number of html errors on that page, like this. https:// and http:// in the href attribute. Also a <p> inside the `href’ attribute.

Also some unclosed elements. Take a look through an html validator:
https://validator.w3.org/nu/?doc=http%3A%2F%2Fwww.mindstormphoto.com%2F

If you’re not writing the html, then it could be a problem with WordPress blocks or perhaps a plug-in?
Is your WordPress install up to date? All plugins up to date? Was there an update to a plugin that coincides with the issue?

Your site is also missing the Font Awesome icons in the navigation menu. Are you on BL4?
If so, BL5 will fix this.
See this post for why this is:

If you want to continue with BL4 (assuming that’s what you’re using) then here’s the fix: