As someone exploring client-side development, I may be misusing the term "collapsible" in my title. What I aim to accomplish in my web application is allowing users to collapse header bars into small chevrons and expand them back when necessary.
I am on the lookout for a framework or code sample that can assist me with this task. While Bootstrap is my primary choice for design and layout of my app, compatibility with it would be ideal but not essential. Starting from scratch seems daunting, so I appreciate any help I can get.