diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-entry.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-entry.html
new file mode 100644
index 000000000000..44f95dccbf41
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-entry.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: entry animation should consider view-transition-class from new state</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+}
+
+#target.new-state {
+  view-transition-class: cls;
+  view-transition-name: target;
+}
+
+@keyframes jump {
+  from { opacity: 1;}
+  to { opacity: 1;}
+}
+
+::view-transition-group(*),
+::view-transition-image-pair(*),
+::view-transition-new(*) {
+  animation-name: jump;
+  animation-timing-function: step-start;
+  animation-duration: 1s;
+}
+
+::view-transition-new(*.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition(() => {
+    document.getElementById("target").classList.add("new-state");
+  }).ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-exit.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-exit.html
new file mode 100644
index 000000000000..c687461f18ea
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-exit.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: exit animation should consider view-transition-class from old state</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+}
+
+#target:not(.new-state) {
+  view-transition-class: cls;
+  view-transition-name: target;
+}
+
+@keyframes jump {
+  from { opacity: 1;}
+  to { opacity: 1;}
+}
+
+::view-transition-group(*),
+::view-transition-image-pair(*),
+::view-transition-old(*) {
+  animation-name: jump;
+  animation-timing-function: step-start;
+  animation-duration: 1s;
+}
+
+::view-transition-old(*.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition(() => {
+    document.getElementById("target").classList.add("new-state");
+  }).ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-ident.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-ident.html
new file mode 100644
index 000000000000..1418a90bc455
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-ident.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should match ident.class</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(target.cls),
+::view-transition-old(target.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple-wildcard.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple-wildcard.html
new file mode 100644
index 000000000000..53eaacfe799b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple-wildcard.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should match with wildcard and multiple classes</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls some-div;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*.cls.some-div),
+::view-transition-old(*.cls.some-div) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple.html
new file mode 100644
index 000000000000..1ab69340b4be
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-multiple.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should match with multiple classes</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+  view-transition-class: cls some-div;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(target.cls.some-div),
+::view-transition-old(target.cls.some-div) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-wildard.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-wildard.html
new file mode 100644
index 000000000000..13490d58786b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-match-wildard.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should match with wildcard</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*.cls),
+::view-transition-old(*.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-ident.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-ident.html
new file mode 100644
index 000000000000..97db64fca200
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-ident.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should not match different ident</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*),
+::view-transition-old(*) {
+  left: 100px;
+}
+
+::view-transition-new(target.other),
+::view-transition-old(target.other) {
+  left: 0;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-partial.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-partial.html
new file mode 100644
index 000000000000..9d9838036bc7
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-partial.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should not match if only some classes match</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*),
+::view-transition-old(*) {
+  left: 100px;
+}
+::view-transition-new(target.cls.other),
+::view-transition-old(target.cls.other) {
+  left: 0;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-wildcard.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-wildcard.html
new file mode 100644
index 000000000000..722e41304550
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-mismatch-wildcard.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should not match if only some classes match (with *)</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*),
+::view-transition-old(*) {
+  left: 100px;
+}
+
+::view-transition-new(*.other),
+::view-transition-old(*.other) {
+  left: 0;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-multiple-vt-classes.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-multiple-vt-classes.html
new file mode 100644
index 000000000000..d7ca0a049361
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-multiple-vt-classes.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: selector should match when view-transition-class has multiple idents</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+  view-transition-class: cls some-div;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(target.cls),
+::view-transition-old(target.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-new-with-class-old-without.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-new-with-class-old-without.html
new file mode 100644
index 000000000000..5aedc33b3c10
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-new-with-class-old-without.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: view-transition-class should apply if applied only in new state</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+}
+
+#target.new-state {
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*.cls),
+::view-transition-old(*.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition(() => {
+    document.getElementById("target").classList.add("new-state");
+  }).ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-old-with-class-new-without.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-old-with-class-new-without.html
new file mode 100644
index 000000000000..6c153253e00a
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-old-with-class-new-without.html
@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: view-transition-class should not apply if applied only in old state</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+div {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+}
+
+#target {
+  background: green;
+  view-transition-name: target;
+}
+
+#target:not(.new-state) {
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-new(*),
+::view-transition-old(*) {
+  left: 100px;
+}
+
+::view-transition-new(*.cls),
+::view-transition-old(*.cls) {
+  left: 0;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition(() => {
+    document.querySelector("#target").classList.add("new-state");
+  }).ready.then(takeScreenshot);
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-ref.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-ref.html
new file mode 100644
index 000000000000..89b3a8a78efd
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-ref.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+<title>View transitions: reference expectation</title>
+<style>
+div {
+  position: relative;
+  left: 100px;
+  width: 100px;
+  height: 100px;
+  background: green;
+}
+</style>
+<body>
+<div></div>
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-group.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-group.html
new file mode 100644
index 000000000000..3e4dbb303c61
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-group.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: group selectors should respect classes</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+:root::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+:root::view-transition-group(target.cls) {
+  left: 100px;
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(requestAnimationFrame(() => takeScreenshot()));
+});
+</script>
diff --git a/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-image-pair.html b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-image-pair.html
new file mode 100644
index 000000000000..8f0f2ef2a974
--- /dev/null
+++ b/testing/web-platform/tests/css/css-view-transitions/pseudo-with-classes-view-transition-image-pair.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transition classes: group selectors should respect classes</title>
+<link rel="help" href="https://drafts.csswg.org/css-transitions-2/">
+<link rel="author" href="mailto:nrosenthal@chromium.org">
+<link rel="match" href="pseudo-with-classes-ref.html">
+<script src="/common/rendering-utils.js"></script>
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+#target {
+  width: 100px;
+  height: 100px;
+  position: absolute;
+  background: green;
+  view-transition-name: target;
+  view-transition-class: cls;
+}
+
+::view-transition-group(*) {
+  animation-duration: 1s;
+}
+
+::view-transition-image-pair(target.cls) {
+  transform: translateX(100px);
+}
+
+</style>
+<div id=target></div>
+
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+window.addEventListener("load", () => {
+  document.startViewTransition().ready.then(requestAnimationFrame(() => takeScreenshot()));
+});
+</script>
