Background color for div...center text box in element

HTML-CSS
1

tried copy and paste previous div elements to create same features…but, background color for question7 is not showing up, and text box is not centered

2

Question 7 is not showing because, another layer is on top of it. If you remove all the other layers you will see it.
Although you did use the justify-content: center; to try and center it which ussualy does work if no other elements are blocking it howver, you have several of them

3

Not exactly sure what you mean. What “layers” need to be removed? And what “elements” are blocking me from centering the input operation?

4