How to find the cross-browser compatibility bug (Scripts only work in Chrome-like browsers)?

Question

css

The page opens terribly in IE, Smart-TV, etc.
material.elasticbeanstalk.com
IMHO, scripts are disabled.
This is one of my first front-end experiences, I seem to be
missing something basic.

Used jQuery, AngularJS, Bootstrap.

Answer 1

the page opens terribly in IE, Smart-TV, etc.

What does creepy mean?
terribly bad?
awfully long?
terribly not right?

Answer 2

terribly opens in

well, download virtual machines with versions of IE and smart TV and see what's wrong there