can't find navigation in mobile view

Hi @sonam_sharma,
By applying below css in style.css can fix this issue.
.header-top-bg{
position: absolute ;
}

I am able to see humberger button.

Hi @sonam_sharma, the css suggested by @Bhupendra_Raykhere applied and now we can see the navigation.

But I also noticed that the structure of the twig files i.e. page.html.twig and header.html.twig was not right. So, I created this patch which will correct the structure and navigation menu css will be implemented.

Hi shubham_jain

I reproduced the issue and tested your MR, and confirmed that it fixed the issue I can now see the hamburger menu. Please look at the screenshot I attached for your reference

Thank you

Thank you all for your contribution.