More than 4 shortcodes per page gets weird

Everything is fine until I add a fifth shortcode to the page. Then it ends up at the top of the page covering the header of the first section.
This is the best and simplest solution I’ve found – please let me know there’s a way around this issue.

https://www.goodcycles.org/paralax-test/

Thanks
Matt

https://www.ads-software.com/plugins/adamrob-parallax-scroll/