You can animate Headlines by sticking them to the top, creating the stacking effect.
Download and import the Block with this Animation Example

Add Block
- Add a new Block.
- Increase the Block Height by at least 3500.
- Set the Top Margin to 200.
Add Box With Heading 2
- Press ALT+P to add the Box Element.
- Expand the Box to the Sheet dotted lines by dragging the markers.
- Press ALT+2 to add the Heading 2 Element.
- Stylize Heading 2 and center it in the Box horizontally and vertically.
Add Image And Text
- Press ALT+I to add the Image Element.
- Press ALT+T to add the Text Element.
- Change the Image.
- Expand the Image to the Sheet dotted lines by dragging the markers.
- Enter 2 paragraphs of any text.
- Change the Width of the text to 600-650.
- Center the Text in the Block.
Box Animation Properties
- Select the Box.
- Go to the Property Panel.
- Select Animation -> On Scroll -> Sync On Scroll.
- Trigger: Window Bottom
Add a new Animation Step with the following properties.
- Distance: 50
- Sticky/Fixed: Sticky

Copy Elements
- Multiselect all the Elements.
- Copy the Elements.
- Paste Elements.
- Make the Spacing between the copied Box and Text at least 200.
- Change the Box Fill, Text, and Image.
Test Animation
- Preview or publish the page.
- Scroll the page up and down and test the Animation.