"My Home" Dark Mode on Firefox browser on laptop

The main church website and all links with the exception of "My Home" are white background with black text. The "My Home" portion of the church website is dark mode. How do I turn off dark mode on "my home." Unlike with my phone app where I can switch between light mode and dark mode, I have yet to find any setting on the computer webpage to allow me to do this. I find dark mode so uncomfortable that I try and avoid using the church website to do anything because of it.

In the "application menu" (pancake icon or 3 vertically stacked horizontal lines icon) on the Firefox menu bar is the "Settings" menu item. The display appearance settings for the browser web pages are determined by three sources. The browser extensions/themes play a part in the light/dark mode of web pages. Your browser website appearance color scheme setting (automatic/light/dark) and the contrast control play a part. Those three browser settings need to be adjusted to get the desired appearance. Each browser terminology for themes and light/dark mode may be different. The terms I used are for the Firefox browser.