Code Editor window is too small

[PhilippGackstatter]

While playing around in the playground, I noticed that the developer experience could be improved if the code editor window was larger, or alternatively, could be resized. Only the red box can be typed in, in the following screenshot. Ideally (in my opinion) the entire left hand side would be a code editor and the inputs form was somewhere on the right.

[mazurroman]

+1 on this.

It might be worth considering to add a fullscreen button, similar to how cairovm.codes do it (screenshot attached).