Open/Close Sidebar Button is too small/not noticeable

[catarak]

Nature of issue?

• Existing feature enhancement

Feature enhancement details:

The button to open/close the Sidebar is really tiny:

I think it could be a different color, the cursor could be changed to a "->", and it could be the whole left side that is a button that opens (like on the Glitch editor).

[ashu8912]

Working On This also what should be the color of the arrow

[keshav234156]

@catarak I would like to work on this issue!!

[keshav234156]

@catarak How does it look now?.Should I make the PR or any other changes that you would like to suggest?

[keshav234156]

This looks much better? @catarak ?

[keshav234156]