Google uses an elaborate new password-input design, it should be animated away when you're typing, but due to bad design, it does not.
A generic example for non-appropriate use of aria-containers is
using an aria-hidden DIV container,
as a placeholder for an input element,
it relays heavily on JavaScript; and is consider extreamly bad practice,
A better alternative is to use the input-placeholder attribute.
Developer's HUB / Changelog 1.0.2.4 * improved walked through engine (two fixes per walk through + count). 1.0.0.1 + initial