ndl.iitkgp.ac.in - desktop site instead of mobile site

[webcompat-bot]

URL: http://ndl.iitkgp.ac.in/document/fBdFcaCRnkYgi3e9aq2vsRGy0GIEl3yco2p2I2hwstwJpGudCwysSKbapLpIBO1UAnmcjaMkDYHJxx03z5D-og

Browser / Version: Firefox Mobile 57.0
Operating System: Android 7.0
Tested Another Browser: No

Problem type: Desktop site instead of mobile site
Description: layout
Steps to Reproduce:
For example,

1. I've tried to log in.
2. I've filled out the form details.
3. I clicked on the submit button.
4. Nothing happened.

From webcompat.com with ❤️

[MDTsai]

The same on Chrome mobile. But Chrome ignore the width setting and able to pan to see the right part of the page.
Root cause is this page is not designed by mobile but add meta viewport to restrict user scrolling. Overflow content might be part of https://bugzilla.mozilla.org/show_bug.cgi?id=1336332

[karlcow]

html {
	min-width: 800px;
	height: 100%;
	max-height: 100%;
}
body {
	overflow: hidden;
	height: 640px;
}

we lack https://bugzilla.mozilla.org/show_bug.cgi?id=1123938 Virtual viewport to fix this.