Why does SharePoint 2013 and 2016 Authenticate.aspx login page for FBA look like garbage compared to SharePoint 2010? It look like this http://imgur.com/cm5p19N
The newer authentication page is simpler for two reasons I think: 1. It's easier to skin via CSS and to implement in a pop-up window, for a more integrated experience. 2. Organizations are expected to create/customize their own, so nothing special as done with the default.