Improve the visual appearance according to the guidelines

EAP 7.0 Visual Improvements Guidelines is created.

• Includes the layout refinements and visual design tweaks that can be applied to core pages in EAP
• Provides the design specifications and the actions

https://docs.google.com/document/d/1vbRc_qCjYufQ61JflscACCYaooJ3BzzmmsYyuYZ1wEI/edit