http://www.w3.org/TR/css3-values/#viewport-relative-lengths

The images in this test should be sized according to either the height or width of the viewport, whichever is greater.

[#p01] This is a paragraph that contains img elements, each of which refers to the same image ( ). They are separated by br elements.





If they all appear the same, then the browser likely does not support the max unit. Note that if supported, the images should change width as the viewport height changes.