Play button does not work

Hi,

I have installed and configured your plugin successfully.

The only problem is that the video only plays when you click on the featured image of the video, and not on the triangular play button.

Can this be fixed easily with CSS?

Thank you

https://wordpress.org/plugins/html5-videogallery-plus-player/