My immediate response, as someone who does not know css that well and is trying to learn, is to open developer tools, choose responsive design mode and then iPh

My immediate response, as someone who does not know css that well and is trying to learn, is to open developer tools, choose responsive design mode and then iPhone 6. Only looking at the top four, none of these are that great. Where is a way to navigate? They don't seem to be using vw which I expected. Are there good examples that work well with responsive, provide navigation and don't use horizontal scrolling.