Page Navi elements outline

these borders are added by a style in gallery.css
(/wp-content/plugins/file-gallery/templates/default/gallery.css):

.gallery.default .wp-pagenavi a, .wp-pagenavi span {
	text-decoration: none;
	border: 1px solid #BFBFBF;
	padding: 3px 5px;
	margin: 2px;
}

either edit it there,

or try and add this to the end of style.css of your theme:
.wp-pagenavi span {border: none!important; }

Thank you, Thank you, Thank you very much it worked.
Been obsessing awhile about it.

you are welcome ??

if this is sorted, please mark the thread as resolved.