<!DOCTYPE html> <html lang=en> <title>Test for Bug 160403</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"> <span></span> <style> span { border-inline-start: 0px solid rgb(0, 0, 0); border-inline-end: 0px solid rgb(0, 0, 0); transition: border 100s linear -50s; } span.transitioned { border-inline-start: 100px solid rgb(100, 100, 100); border-inline-end: 10px solid rgb(10, 10, 10); } </style> <script> // Test that transitioning each of border-{left,right}-{color,width} // works when the values are set through the -moz-border-{start,end} // shorthands. var e = document.querySelector("span"); var cs = getComputedStyle(e); is(cs.borderLeftColor, "rgb(0, 0, 0)", "value of border-left-color before transition"); is(cs.borderLeftWidth, "0px", "value of border-left-width before transition"); is(cs.borderRightColor, "rgb(0, 0, 0)", "value of border-right-color before transition"); is(cs.borderRightWidth, "0px", "value of border-right-width before transition"); e.className = "transitioned"; is(cs.borderLeftWidth, "50px", "value of border-left-width during transition"); is(cs.borderLeftColor, "rgb(50, 50, 50)", "value of border-left-color during transition"); is(cs.borderRightWidth, "5px", "value of border-right-width during transition"); is(cs.borderRightColor, "rgb(5, 5, 5)", "value of border-right-color during transition"); e.remove(); </script>