Portfolio page giving me an error

I am 11/12 requirements through this project, and on the last one it’s not accepting my answer. It wants the value “305” not “306”. Any suggestions? Thanks.
Pen: https://codepen.io/b3u/pen/KeQMYN.

I couldn’t get the error, when I click “run test”, it passes.

Wierd! Thanks for the feedback. (I tried it in responsive design mode, and it worked).