The issue is that the website isn't responsive for the screen layout of your browser.
This prevents a user to use splitscreen or lesser used widths on some devices.
This would be done by changing the internal code of the JS.
And i know it's probably something that you are already working on, but i would like to see what the community thinks about this!
We’re working on a mobile version of the website. Website will be upgraded gradually during 2018.
Jannis Noulet commented
Thanks for the quick feedback, Really liking the progress of the site overall over the last years!
Really helping and listening to the community :D.