[Help Wordpress] Description text alignment

Hi,
I just installed and setted RoyalSlider: works fine, great!
I just need help for aligning the Description text with my images, I'm usign the slider in Gallery mode with dark-default theme.
I attach 2 images: first one shows how it's now, the second one how I need it!
Thanks for any help!

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help.dimsemenov.com