Gap down right hand side

My site has a white gap down the right hand side recently and a horizontal scroll bar to reveal this causeing gaps on mobile devices as people slide down pages. It never used to do this. I’m not sure if perhaps a word-press update has cause this. Is there a way to stop this from happening?

Hello there,

To fix it, please try adding the following CSS code by using the Simple Custom CSS plugin or child theme’s style.css?

  overflow-x: hidden;