Thanks Stephen,
It’s working now, especially after removing firstImageIndex="1"!
I have two types of pages that work!
New 1:
http://lepec.and.co.free.fr/photo/2025gando
galleryHeight="92%" with <header> (I removed the table)
Results on Windows PC >> Perfect in my opinion, the gallery integrates nicely, and with a common top banner, navigation is easy. You can return to the main page by clicking on the icon (cow!)
Results on iPhone (iOS) >> SplashPage appears, but that’s OK, with one click on the chosen image, it brings you straight to the gallery (in Small Screen Mode).
New 2:
http://lepec.and.co.free.fr/photo/2025gandox
galleryHeight="100%" x 100%
Results on Windows PC >> OK, with an improved title (including an image), but no clickable link back to the homepage. Also, on large screens, the thumbnails are far to the left of the photo, the split view is less appealing to me.
Results on iPhone (iOS) >> No SplashPage, it opens directly, responsive view works well.
The advantage is that the HTML code is very very simple, with no styles.css.
I'm still undecided. I guess you prefer... I mean, recommend 100x100 New 1 ;-) ?
Thanks again, really appreciate it
Edit : I added New 1 bis
http://lepec.and.co.free.fr/photo/2025gandoxx
= New 1 with showSplashPage="NEVER"
Results on Windows PC & iPhone >> OK. I have to check with others mobile devices