D3 Heat Map - y Axis Not Appearing

How do I have the y axis appear? I tried everything. There doesn’t seem to be any visible errors. Can you please help? Thank you.

Codepen is at https://codepen.io/richardvannie/pen/LEPOgYo

you have the y-axis, it’s that line on the left

Are you saying that it should be visible? That it is visible during your test; or you don’t understand my question?

now I don’t see anything in the pen, but when I looked at it the y-axis was visible

I don’t get it. The axis is not visible when I run the pen. Is it possibly browser compatibility?

it’s outside the screen right now for me, but inspecting the page it exists

Is there anything better? The years are not visible in what you are showing. I am doing this completely in JavaScript d3. Thank you.

Also, does anybody else have anything about this?