#main-container class

Defines the background area that surrounds the main container.

The following illustrations show:

The #main-container style before applying CSS changes.
The #main-container style after the background-color property has been changed to green.

Default CSS	Modified CSS
#main-container { display: flex; align-items: center; justify-content: center; padding-top: 25px; padding-bottom: 25px; }	#main-container { display: flex; align-items: center; justify-content: center; padding-top: 25px; padding-bottom: 25px; background-color: green; }