Hey guys, I designed a website from scratch, I have a lot of frustrations. 1. when I enter the website I see a lot of problems like the header is not always sticky and behave really strange, a line appears on the text which doesn't look the same in the editor page. 2. When I finished working on the desktop and moved to the tablet I realized that everything looks like a mess! and I don't know where to start and how.. I couldn't find any tutorial about responsive .please help!