How To Create a Modal. Responsive design that adapts to any screen size and orientation. popItUp is a lightweight jQuery plugin that uses Bootstrap styles to create fully customizable, ajax-enabled, modal-style popup windows with some cool jQuery animation effects. Recommended Articles. First of all, load the Bootstrap 4 CSS and Font Awesome CSS in the head section of your HTML page in order to create a login form modal popup. Modal Option, 2. html by Comfortable Capuchin on Mar 26 2020 Donate A popup may very well be the way to go. âpopup overlay bootstrapâ Code Answer . 1. The Modal component renders its children node in front of a backdrop component.. You can adjust the code bellow accordingly if you are not using them. This is a guide to CSS Overlay. Bootstrap Blue. Click the Bootstrap Grid Overlay icon to toggle the overlay on and off. Hereâs a guide to test which of the basic overlay straightforward image impact on the drift is going to best suit yourâ¦ First of all, we need an html page on which our popup will live, and an element that is going to trigger our popup.