Create an own litebox template
To create an own template, you only have to create a /litebox folder in your theme-folder: wp-content/themes/yourTheme/litebox
There can you create a new php-file. The template will filled with images by javascript, so it is necessary that your template have the following base-structure:
<div id="litebox-gallery" class="litebox-gallery">
<div id="litebox-owlslider" class="litebox-owlslider owl-carousel owl-theme">
</div>
<div class="close-button"></div>
</div>
If you want thumbnails in your litebox, you only have to add an element with the class "thumb-container":
<div id="litebox-gallery" class="litebox-gallery">
<div id="litebox-owlslider" class="litebox-owlslider owl-carousel owl-theme">
</div>
<div class="close-button"></div>
<div class="thumb-container"></div>
</div>