Expected behavior Side nav bar stick while main content scrolls

Actual behavior Scrolling with other content

Resources (screenshots, code snippets etc.) Question: I deleted some files to improve site performance and I'm concerned I deleted the jquery file with the sticky code. Can you tell me which file it is in so I can make sure I have it? $(function () { $(".sticky").sticky({ topSpacing: 128, stopper: "#footer" }); }); and sticky is a class in ul of side navigation list and footer is id of footer element. Thanks for your help! Sheryl