est_computed_value('scroll-timeline-axis', 'block, y, x, inline');
test_computed_value('scroll-timeline-axis', 'inline, inline, inline, inline');

test(() => {
  let style = getComputedStyle(document.getElementById('target'));
  assert_not_equals(Array.from(style).indexOf('scroll-timeline-axis'), -1);
}, 'The scroll-timeline-axis property shows up in CSSStyleDeclaration enumeration');

test(() => {
  let style = document.getElementById('target').style;
  assert_not_equals(style.cssText.indexOf('scroll-timel