I'm looking for the custom CSS for hiding the default 'Forgot your password?' and 'Forgot your username?' links. Any pointers appreciated.

A previously-used template's designer had directed me to place this code into the custom.css file:

.userdata .unstyled {
display: none;
}

Hi there,
please use the Browser Developer tool to find the css classes.
www.joomlaplates.com/support/documentation/theme-customizing