Retrogrid 3D:
https://codepen.io/MK-PL/pen/QbOGxv
CSS3 Colorful round loading animation:
https://codepen.io/MK-PL/pen/rLPqgR
CSS3 Colorful round loading animation2:
https://codepen.io/MK-PL/pen/RRvqYy
Hamburger menu with hover animation:
https://codepen.io/MK-PL/pen/RROvAO
Hide menu on scroll down, show on scroll up - smooth animation:
https://codepen.io/MK-PL/pen/BLvwqX
Circular badge with slogan bar:
http://codepen.io/MK-PL/pen/eBvvGq