There are many changes had been made? In the header, the font, background color and the animation itself had changed. Through the improvement of the navigation bar, you can also access the website with beautiful interface. I added also two navigation links. The background colors of hover and active navigation link. The font family also changed for better reading experience, the background color of the website and its section. You can maximize the pictures in the Gallery Tab. And I changed the CSS into External link. The some meta tags has also been added. You can compare the difference of the old to the new.
My reference for the changes of my websites is the www.w3schools.com.