There is a problem of displaying a modal window created using the bootstrap framework in mobile browsers.
That is, in browsers on computers, the display of modal windows is correct, but, in mobile versions of the browser, a block appears on top of the modal window, blocking all access to the site.
Track that it does not work as there is no possibility to view the markup in the phone (or I have not yet found a way).
What could be the problem and where can I test the work of sites for phones (namely, phones, and not to check the adaptability of the layout)?