I have two sections, named One and Two, each taking up full-screen height and width (ignoring the top navbar in the video). As a user scrolls through my page, I want to prevent the sections from being partially scrolled. The window should display either the first or second section entirely. When the user scrolls down, they should see the 2nd section with full-screen height; when scrolling up, they will see the first section taking up the entire height. Users are only able to scroll to the 1st or 2nd section without stopping in the middle. If my description is not clear, please refer to the following GIF: https://i.sstatic.net/dsZOp.gif Thank you for your help.