I realized some types of cookie consent banners:
- a bar on the top or bottom of the page, with informations and options to select. The page remains interactive, user can browse menu and so on.
- a popup partly covering page, with informations and options to select. The page remains interactive, user can browse menu and so on.
- a popover fully covering page, with informations and options to select. The page remains so long not usable until user selects options and confirms selection. Then popover disappears.
In this relation i would like to know: are the both first and second solutions legally conform? If so, why some webmasters choose to use the third type?