How to remove menu and bottom from landing page

<span style="color: #222222; font-family: arial, sans-serif; font-size: 12.8px;">Hi</span> My name is Andy Today I have moved my site from "Avada" theme to your WP MLS theme I have trouble with my landing - it has header and footer I read FAQ and i find few answers but it has bugs 1. "Use BareBones template" + top and bottom disabled - nice - left and right margin disabled too - not nice (before- https://www.screencast.com/t/HwgrYWaeo27M after - https://www.screencast.com/t/FEcAvoDzZecY) 2. "Use CSS" I add "header,#headertop,footer,#footerbottom{display:none;}" +  top and bottom disabled - nice - I receive long white bottom empty space - not nice Now i leave second version, but i want to have correct landing So, how remove top and bottom without bugs?