.thumbnail is not working in CodePen

Hi guys,
I start my first Tribute Page project with Bootstrap. I tried to create a thumbnail for my image, but it seem .thumbnail is not working.:disappointed_relieved: so, I end up with setting CSS by myself. Does anyone know how to make .thumbnail work without setting CSS?
Here is the code I refer to from W3C: https://www.w3schools.com/bootstrap/tryit.asp…
Any advice and suggestions will be greatly appreciated. Thanks!

Build a Tribute Page

Maybe because you were using bootstrap 4. Try using this instead:


1 Like

It work! Thank you :cry: know there are some difference between version 4 and 3.3.7.
Thank again kevcomedia!