title: geolocation in html5 and js - I refused but I would like to accept - How to reset?
body: <p>By going to this page with Firefox : <a href="https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_geolocation" rel="nofollow noreferrer">https://www.w3schools.com/html/tryit.asp?filename=tryhtml5_geolocation</a>
  After clicking on "Try it" a dialog box opened at the top of Firefox and I refused. How to make it appear again or reset for allow?</p>
  
  <p>Thank.</p>