just fix the file /w3all/imageattachrotation/styles/all/template/event/overall_header_head_append.html so to correctly load the css file that style the rotation popup. Works on all themes.
For jpg/jpeg, gif, png, webp attachments files
Tested under 3.3.13 > ( 3.2.0> should also work fine, but not tested ) ( 3.1.0> not tested )
If updating, disable the old version and delete data into ACP Extensions Manager
Remove the folder imageattachrotation (or whatever it was nemed before) into
/ext/w3all/
then follow installing the new 1.0.6
Copy the "w3all" folder into phpBB/ext/
So you'll have: phpBB/ext/w3all/imageattachrotation
Go to "ACP" > "Customise" > "Extensions" and enable the "Attachments images rotation" extension
Done
It should fit your theme, anyway you can easily change and style it into:
/ext/w3all/imageattachrotation/styles/all/template/event/overall_footer_body_after.html
note that maybe you do NOT have to change w3classes and w3id for html elements, almost these used by javascript on same file, or the js code will not work.
The html code snippet is on top of the file
/ext/w3all/imageattachrotation/styles/all/template/css/style.css
/ext/w3all/imageattachrotation/styles/all/template/event/overall_footer_body_after.html
search for line (+- on top):
var Pw3A = 1; // 0 Append icon, 1 Prepend icon (require to rebuild the phpBB template)