[Plugin: Long Description] How to center long description

I would like to center the long description under each image. I’ve tried inserting <div align = “center”>DESCRIPTION<div/>, and sometimes it works and sometimes it doesn’t! Aaaargh! I have checked and double and triple checked and my code is the same from image to image. Any ideas?

https://www.ads-software.com/extend/plugins/long-description-for-image-attachments/