The Cookie Bar plugin creates a small bar at the top or bottom of the website with a short message about cookies and accept, decline, and privacy policy buttons.
Once a user has made the decision to either accept or decline, the Cookie Bar slides up, then disappears.
The Cookie Bar is also very easy to style. There are just 9 lines of CSS code in total. Changing the heights, widths, background colours, etc. is very quick and easy meaning it can fit in with the website design and colour scheme.
Credits and documentation at primebox