Problems with Blog ang header. Sim Click free

Hi My website is fotografiandolanoche.online with the Sim Click free theme. I like it. But I have two problems: 1/ I wanted a Static frontpage with nothing but the image, I add in Customize-Addicional CSS the code in order to achieve this: .home #main { display:none; } But I see a band at the bottom or the footer (2-3 lines) with the background colour. How can I eliminate this footer? 2/I've changed the blog page many times, but after I put the quoted CSS code the posts don't show in the posts page (Blog) anymore. How can I solve this problem? Thanks a lot