20%)", "circle(at calc(80%) calc(90%))");
test_valid_value("shape-outside", "circle(at bottom right)", "circle(at 100% 100%)");
test_valid_value("shape-outside", "circle(at center)", "circle(at 50% 50%)");
test_valid_value("shape-outside", "circle(at center 50px)", "circle(at 50% 50px)");
test_valid_value("shape-outside", "circle(at center bottom)", "circle(at 50% 100%)");
test_valid_value("shape-outside", "circle(at center center)", "circle(at 50% 50%)");
test_valid_value("shape-outside", "circle(at center