Change the mobile view navbar loading animation

[YoshithaRathnayake]

Is your feature request related to a problem? Please describe.
Currently the mobile navbar is like left to right when click the hamburger icon.

Describe the solution you'd like
Make the mobile navbar top to bottom when click the hamburger icon.

Are you working on it?
Yes

[YoshithaRathnayake]

Shall I work on this?

[YoshithaRathnayake]

Thanks

[YoshithaRathnayake]

Is your feature request related to a problem? Please describe. Currently the mobile navbar is like left to right when click the hamburger icon.

Describe the solution you'd like Make the mobile navbar top to bottom when click the hamburger icon.

Are you working on it? Yes

Is this way is good or the current way good. tell me you suggestions. (@kumuditha-udayanga , @Piumal1999 , @jayasanka-sack )