Link to section, only shows a portion in preview mode?

Hey! Does anyone know why when I enter into preview mode, and click on the links at the top to go to the correct section, one of the links only shows a portion of the page?
(On my second page, the projects page, the “DESIGN” link goes to the proper section but only shows a portion of that section)
If anyone could help me out with this, it would be much appreciated!

Here is my site Read-Only: LINK