Move down content Options

[Faraz]

Hi,

I am working on making this Squarespace template "bend to my will". Please view the site here if you wish to help. scroll down as well: https://faraz-manan-2apz.squarespace.com/

Now I want those squares with pictures (projects in my portfolio) to move down to where the full screen header image ends ( ie I wanr no overlap between header and page content). The header image is responsive (its always full screen).

Please tell me some custom css to make the "projects" are begin below the ever-adaptable header.

Thanks