single event not displaying correctly

Thank You for this plugin, I appreciate the widget but when somebody wants to know about one event the event content is very thin, not enougth for a correct display. for exemple :
http://peche-monnaie-locale.fr/evenements/unique/comptoirs-mobiles-de-la-rentree-aux-nouveaux-robinson/

The rigth padding is set to 376, I think this is wrong because anther padding of 376px is already done by WP.

Can you fix this ?

Thanks again,

Marc from France

https://ww.wp.xz.cn/plugins/events-maker/