diff --git a/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align-nested.tentative.html b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align-nested.tentative.html
new file mode 100644
index 000000000000..ddea57055174
--- /dev/null
+++ b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align-nested.tentative.html
@@ -0,0 +1,119 @@
+
+
+ Updating the snap alignment of a snap container's content should make the snap
+ container resnap accordingly.
+
+
+
+
+
+
+
+
+
diff --git a/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align.html b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align.html
index c4bb2e9ff426..a625621c270f 100644
--- a/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align.html
+++ b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/changing-scroll-snap-align.html
@@ -64,59 +64,6 @@
initial_target.removeAttribute("class");
}
-test(t => {
- t.add_cleanup(cleanup);
- scroller.scrollTo(0,0);
- assert_equals(scroller.scrollTop, 100);
- assert_equals(scroller.scrollLeft, 100);
-
- initial_target.style.setProperty("scroll-snap-align", "end");
- // scroller maintains scroll position which is still valid as the target's
- // snap area covers the snap port.
- assert_equals(scroller.scrollTop, 100);
- assert_equals(scroller.scrollLeft, 100);
-}, "Changing a large target's snap alignment shouldn't make the scroller" +
- " resnap if the scroller is already in a valid snap position.");
-
-// Similar to above test case except targets are too small to cover snap port,
-// so scroller must snap in response to change in scroll-snap-align.
-test(t => {
- t.add_cleanup(cleanup);
- const initial_target_height = initial_target.offsetHeight;
- const initial_target_width = initial_target.offsetWidth;
- const other_target_height = initial_target.offsetHeight;
- const other_target_width = initial_target.offsetWidth;
- t.add_cleanup(() => {
- initial_target.style.setProperty("height", `${initial_target_height}px`);
- initial_target.style.setProperty("width", `${initial_target_width}px`);
- other_target.style.setProperty("height", `${other_target_height}px`);
- other_target.style.setProperty("width", `${other_target_width}px`);
- })
- scroller.scrollTo(0,0);
- assert_equals(scroller.scrollTop, 100);
- assert_equals(scroller.scrollLeft, 100);
-
- initial_target.style.setProperty("height", `${scroller.clientHeight * 2/3 }px`);
- initial_target.style.setProperty("width", `${scroller.clientWidth * 2/3 }px`);
- other_target.style.setProperty("height", `${scroller.clientHeight * 2/3 }px`);
- other_target.style.setProperty("width", `${scroller.clientWidth * 2/3 }px`);
-
- // scroll (and snap) to top left of other target.
- scroller.scrollTo(other_target.offsetTop,
- other_target.offsetLeft);
- assert_equals(scroller.scrollTop, other_target.offsetTop,);
- assert_equals(scroller.scrollLeft, other_target.offsetLeft);
-
- other_target.style.setProperty("scroll-snap-align", "end");
- // should be scrolled so as to align scroller's bottom-right with
- // other_target's bottom-right.
- assert_equals(scroller.scrollTop,
- other_target.offsetTop + other_target.offsetHeight - scroller.clientHeight);
- assert_equals(scroller.scrollLeft,
- other_target.offsetLeft + other_target.offsetWidth - scroller.clientWidth);
-}, "Changing the current (non-covering) target's snap alignment should make " +
- "the scroller snap according to the new alignment.");
-
test(t => {
t.add_cleanup(cleanup);
scroller.scrollTo(0,0);