(a) Write an html document that displays three other html documents, "11.html", "21.html", "31.html" as a set of frames such that 1 occupies 3/4 of the top, and 2 and 3 occupy the bottom 1/4, with 2 using 200 pixels on the left, and 3 using the rest. ` (10 marks)

(definition: 5 marks and use: 5 marks)