Few thoughts...<p>1. Your site is very confusing to me. Maybe a quick tutorial would be helpful?<p>2. Lot of UI quirks (as the other person has pointed out)<p>3. Why would I use your site versus the gazzillion other options available to me? It would be helpful if you mention your value proposition on your home page
The links in your navbar fade to dark on hover, but the navbar itself turns to dark on scroll. When the navbar is black, you can't read the link text on hover.
I don't know what is a baby shower, but I encourage you to make it work somehow without logins. People will use it if they don't have to register.