Add hamburger button effect

[marizvi]

Hi,
Whenever we switch to non-desktop view, our navbar get collapsed and hidden, along with it a button also appears which allows us to expand or collapse navigation bar. And this button contains no animation in it which makes it quite static.

Here, In this issue I would like to add some extra animation to that button itself, so that it may look more dynamic and hence enhance the operation of our webpage.

Kindly assign me this issue under LGMSOC'21...

[manankohlii]

@marizvi assigned.