This likewise utilizes the crate structures to assign each collapsible sections. At the point when you click on the menu symbol, the sidebar shows up, which contains navigation menus. Other tutorial that you will like: Bootstrap 4 Sidebar Menu: Tutorial + Free Template. In the demo page I have also created some other sections to make it look more like a “real” website and make it easier for you to customize and maybe create something from it, a website, a web app, … Toggles a collapsible element to shown or hidden. Shows a collapsible element. In bootstrap by using .collapse class you can implement collapsible panels based on your requirement. Button with data-target, A