Frontend Interview Problem
- Modify only foreground.css to match the background
- Do NOT look at the background.css file
- Use display: flex
- Width of the sidebar is 1/5 of the width of the layout
- Each sidebar item is 1/3 the height of the sidebar
- The height of the header is 1/4 the height of the layout
- The height of the main is 1/2 the height of the layout
- The height of the footer is 1/4 the height of the layout