.evr_event_list CSS edit iPad

I am using Skeptical theme and entering the following into Appearance>Edit CSS:

.evr_event_list {
width: 75%;
}

on a desktop it alters the table width of the events list on my Registration page at http://ccwofsc.com/registration/ but on an iPad or iPhone the table bleeds out of my left column and abuts to the sidebar.

Is there a way to fix this through CSS?

http://wordpress.org/extend/plugins/event-registration/