Question 1 Produce the main container using the following specifications :a) The page must have a breaking point at 768px (desktop/mobile).b) In the narrow version, the container must cover the entire screen. In the large version, the container must have a maximum width of 960px and be horizontally centered.c) The narrow version must use the image named bg-small as a background, and the large version bg-big .d) The main container must integrate a fixed header of 80px high with black background and white text.