Remove "Blog" and "From the Blog" and the date posted line

Hello! I'm really loving this theme. But I can't seem to figure out how to remove Blog From the blog on the blog page (named "installations" and I'd like to remove the post dates at the top of the entries. The site is https://chleeart.com/installations/ I have tried in the custom CSS adding body:not(.blog) .custom-header { display:none; } but that did't work.