getting rid of header on landing page

Site URL: https://pufferfish-lychee-nrmj.squarespace.com/config/pages

Hi there, 

I need to create a landing page that is just image with a button that allows the visitor to enter the site. Apparently I need custom code to do this? Has anyone done it? Can I borrow your code?

Thanks

Michelle 

Hi Michelle, your site is private so we can't see what version/template you are on. Could you change the Settings > Availability to password-protected and share that password here?