This a very chique search field animation by Aaron Iker. When you search for a term in the text field the magnifying glass scans the text and transforms the text field into a card-style layout where you can display the results…noice.
If you are having trouble with the pen, try the archived copy on GitHub
Search to Card UI Snippet
See the Pen Search field animation by Aaron Iker (@aaroniker) on CodePen.default