Responsive Anti-Patterns
You know, sometimes I just want to zoom out. I like the bird's eye view from time to time. Now that the web's gone all kinds of flexy, my poor little thumb just has to keep scrolling.
Your hamburger menu doesn't impress me much either. If there's space for some navigation items, why not just put them there?
Here's some code that might help you:
* {
display:block;
}