Change Hamburger menu to 'X' on mobile

[B-and-B-Studio]

Checklist

• I have read and accepted the contributing guidelines.

How did you create the site?

Generated from chirpy-starter

Description

As you can see the screenshot above, on mobile when we open the menu it still stays as hamburger icon.
Is there a way to change it to an 'X' icon?

Operations you have already tried

I keep looking through the codes but haven't found anything.

Anything else?

No response