Floating gallery

Is there a correct way to float a gallery other than adding additional styles in Gallery > Other Options > Styles > Show Customization Options? When I attempted to float a galleria style gallery to the right, it floated, but no longer displayed. I see the wrapping div when I inspect the element, but it does not have any size/dimension to it.

Cannot post a public link as this site is in development for a client.

https://ww.wp.xz.cn/plugins/nextgen-gallery/