Focused inputs cause blurring of the page

I have a series of inputs on a page. Whenever an input is not focused, the white text on the rest of the page gets darker (almost like there’s a blurry layer on top of the screen). I don’t have any Form Container elements on the page, nor do I have any states that affect other elements.

I also don’t use formatting classes on any elements. Does anybody else know why this could be?

There are elements on the screen with various z-indexes, but I don’t know if this could be related.

Any help would be appreciated!