How to stretch an image to full screen in fotorama?

Question

Gallery

Greetings!
I'm trying to change the position of previews in fotorama 4 from horizontal to vertical. Looks like I found a solution
but when expanding to full screen mode, it is not possible to stretch the image to the entire height of the screen (there is an empty space under the image). Through height 100% or 100vh it was not possible to stretch.

Answer 1

$('.fotorama')
  .on('fotorama:fullscreenenter fotorama:fullscreenexit', function (e, fotorama) {
    if (e.type === 'fotorama:fullscreenenter') {
      // settings for full screen
      fotorama.setOptions({nav: false});
    } else {
      // Back to normal settings
      fotorama.setOptions({nav: 'thumbs'});
    }
  }).fotorama();

Answer 2

.fotorama__fullscreen-icon {
    background: url('../img/bg.png') no-repeat scroll 0 0 rgba(0, 0, 0, 0) !important;
    width: 100% !important;
    height: 100% !important;
    right: 0 !important;
    top: 0 !important;
    z-index: 10 !important;
}