Looks very solid!
I like the layout, colors, hierarchy, animations and all the little details. One thing I’m not so sure about is the sections’ heading font, Lato Heavy would look pretty good in there IMO.
I’d flip the colors on hover in your navbar to green background and white text, maybe add a quick (0.15 - 0.2s) transition as well.
I’d also change the images in the header slide to own-written content, would be better quality than images and give you more control. If you just wanted to include a slider then don’t mind it. I like improving little details 
Yes I agree i will change header slides soon