Full Width Slider with left Navigation

Hello
I’m trying to include your slider and it has this odd behaviour, that the full width slider hides behind the left navigation:
http://timschoch.ch/hochzeiten

This might be related to https://ww.wp.xz.cn/support/topic/full-width-layout-overflow but there is no resolution there…

Do I have to adjust something?
Thanks for your help
Tim

https://ww.wp.xz.cn/plugins/master-slider/