Making a section/div only visible when text is entered in textfield

Design help General
1

Dear webflow users,

I would like to show a certain section or div, but only when text is entered in a certain text field.
How can I acvhieve this?

https://rc.advicemedia.be/

So text field is the zoeken field and serach results are in a section beneath, but only when text is entered the results should be visible. I’m using Isotope for the search.

Thank you for you help.