This is a search menu. By typing in the search input you can query all of the articles available on the site and get instant and relevant results from the first keystroke. You can close the search menu by hitting the esc key once if the search input is empty. If you have made a search query hitting the esc key will clear the search input and search results. You can naviate the search the menu by hitting the tab key. Once you reach the last search result you will be naviated back to the clear button where you can clear the results make a new search query. If you reach the last suggested entry you will be navigated to the close button. To get back to the search input you have to hit shift + tab from either the clear or close button.