A dropdown allows users to have details information and/or perform actions.
A dropdown is an overlay window used to display any type of information.
When users toggle a dropdown, the overlay window shall appear below the element that generates it.
If users click on a dropdown item or anywhere outside the window, the dropdown shall disappear.
Dropdowns are squares with a 1px grey outline and 4px corner radius. To make them stand out from the rest, they shall have a shadow.