Dark mode doesn't darken "Get started in seconds" section

Created by: ahtee

Describe the bug

When enabling dark theme via the navigation bar, the site darkens completely, except the Get started in seconds section on the Home page (https://create-react-app.dev/)

Did you try recovering your dependencies?

No

Which terms did you search for in User Guide?

No terms were searched

Environment

Production create-react-app.dev site and on the home page.

Steps to reproduce

(Write your steps here:)

1. go to create-react-app.dev
2. In the navigation bar, change the sun toggler to night
3. The dark theme will appear
4. Scroll down on the Home page to see the Get started in seconds section
5. Observe that this section ignores the dark theme

Expected behavior

(Write what you thought would happen.)

Entire site is coverted into the dark theme with shades of black (or close to black)

Actual behavior

(Write what happened. Please add screenshots!)

Reproducible demo

(Paste the link to an example project and exact instructions to reproduce the issue.)

I am using Brave browser (new build that is based off Chromium) version 0.7.022

Created by: ahtee

Probably has to do with the lightBackground_19Qt class applied to the section?