I'm not sure who the web developer is for this web site, but if he/she wants a suggestion, here is one minor area to improve.
When I log in on my Mac OS X 10.10.3 and Safari 8.0.6, Keychain remembers my User ID and password and fills them in. Which is great.
In the picture below on the left is what it looks like when I first try to log in and get the login prompt. Note that my User ID and password are filled in. However, note that the "Log in" button is not highlighted and if I click it, it doesn't log me in.
If I simply hit the tab key to go from the User name to the password field, then the "Log in" button turns blue (right picture below) and I can click the "Log in" button. It sure would be nice if I didn't have to hit tab each time and could just click the "Log in" button.