Submin event form problem

Hi can some one please help me. I have events manager installed and ive made a pade to submit event but the [event_form] page looks very odd and everythings not scaled correct i think due to my theme can any one help me make it right. I know very little on editing so would need to be a guide for a newbie if theres a fix to how it displays.

Thank you

https://wordpress.org/plugins/events-manager/