This test verifies the position and size of the highlight rectangles overlayed on an SVG root element when the page is zoomed.

margin rect is 408 x 528 at (12, 24)
border rect is 336 x 456 at (48, 60)
padding rect is 240 x 360 at (96, 108)
content rect is 120 x 240 at (156, 168)