Implementing focus on index.html

[JeremieLitzler]

What to improve?

• The map has a lot of buttons. It requires a lot of TAB presses to get to the search button!
• The search button needs to be above the map.
• When clicking search with the key ENTER, the focus is still behind the modal.
• When viewing the filters modal, the focus exists the modal after focusing on the close button.

Checklist

• Make the map easier to navigate through with a keyboard
• Add a skip link to go straight to the search button.
• Make sure the focus is on the first select element in the filter modal.
• Make sure the focus stays in the filters modal while it is opened.
• Make sure the focus returns to the search button when the user clicks the close button in the filters modal.
• make sure the focus returns to the search button after selecting a dropdown item.