::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.
In the ACT, the UAI was determined by ongoing assignments and exams spanning through both Years 11 & 12. The ACT Scaling Test (AST), sat by tertiary students, linked a student's ability with the school's mean score in each course and was used to scale students in different courses and schools.