On firefox, you can't click on any buttons are anything once you login. You have a modal with no content hiding everything.
<div class=library-modal>, it's child div is width 0 height 0. There is no min-width or min-height set on it. It is supposed to hold your training welcome message <div class=modal-contant>. Can you set a min-width and min-height on modal content div so we can click things? ty!