@media (-o-min-device-pixel-ratio: 2) { .test-math-and-units { font: ignores 0/0 rules; test-division: 7em; simple: 2px; } } #units { t1: 22em; t2: 22em; t3: 2em; t4: 22em; t5: 22em; t6: 2em; t7: 22em; t8: 22em; t9: 2em; t10: 22em; t11: 22em; t12: 2em; }