::placeholder. The ::placeholder pseudo element (or a pseudo class, in some cases, depending on the browser implementation) allows you to style the placeholder text of a form element. As in, the text set with the placeholder attribute: <input type=email placeholder=jane@firefly.com>.
Australian Capital Territories. As of 1996 A.C.T. changed it's name to ACT. It no longer stands for American College Testing since they do so many other things besides just the testing.
According to the ACT organization, ACT originally stood for American College Testing. However, in 1996 the official organization name was shortened to only ACT. The change was enacted to better reflect the full range of programs and services offered beyond the college entrance testing.