Do not use a framework unless you are stripping everything that is not used.
The resulting page must
2 Load significantly faster.
3 Look and function as close as possible to the the current site.
4 Work on android, iphone, tablets, chome, firefox, internet explorer.
5 Close the hamburger menu when a menu item is selected
6 Remove the left to right scrolling image in the first section
7 Insert one more section for an screen sized image