diff --git a/css/CSS2/cascade-import/WEB_FEATURES.yml b/css/CSS2/cascade-import/WEB_FEATURES.yml
index 34287ccff110c4..1a9d0b3aa65eaf 100644
--- a/css/CSS2/cascade-import/WEB_FEATURES.yml
+++ b/css/CSS2/cascade-import/WEB_FEATURES.yml
@@ -9,3 +9,6 @@ features:
   - cascade-import-010.xht
   - cascade-import-011.xht
   - cascade-import-012.xht
+- name: import
+  files:
+  - cascade-import-002.xht
diff --git a/css/CSS2/cascade/WEB_FEATURES.yml b/css/CSS2/cascade/WEB_FEATURES.yml
index f5d1bcd4957ec7..976ac275922617 100644
--- a/css/CSS2/cascade/WEB_FEATURES.yml
+++ b/css/CSS2/cascade/WEB_FEATURES.yml
@@ -2,3 +2,8 @@ features:
 - name: inherit-value
   files:
   - inherit-*
+- name: import
+  files:
+  - at-import-*
+  - cascade-007.xht
+  - cascade-012.xht
diff --git a/css/CSS2/css1/WEB_FEATURES.yml b/css/CSS2/css1/WEB_FEATURES.yml
index b33e02edf5801b..718129c221d808 100644
--- a/css/CSS2/css1/WEB_FEATURES.yml
+++ b/css/CSS2/css1/WEB_FEATURES.yml
@@ -32,3 +32,6 @@ features:
 - name: font-style
   files:
   - c523-font-style-000.xht
+- name: import
+  files:
+  - c11-import-000.xht
diff --git a/css/CSS2/media/WEB_FEATURES.yml b/css/CSS2/media/WEB_FEATURES.yml
new file mode 100644
index 00000000000000..545a761fb42131
--- /dev/null
+++ b/css/CSS2/media/WEB_FEATURES.yml
@@ -0,0 +1,7 @@
+features:
+- name: import
+  files:
+  - media-dependency-002.xht
+  - media-dependency-004.xht
+  - media-dependency-005.xht
+  - media-dependency-008.xht
diff --git a/css/CSS2/syntax/WEB_FEATURES.yml b/css/CSS2/syntax/WEB_FEATURES.yml
index b5b98a650ab547..30a407caf9b3da 100644
--- a/css/CSS2/syntax/WEB_FEATURES.yml
+++ b/css/CSS2/syntax/WEB_FEATURES.yml
@@ -64,3 +64,17 @@ features:
 - name: lang
   files:
   - case-sensitive-004.xht
+- name: import
+  files:
+  - at-keywords-000.xht
+  - at-rule-004.xht
+  - at-rule-005.xht
+  - at-rule-006.xht
+  - at-rule-007.xht
+  - at-rule-008.xht
+  - at-rule-009.xht
+  - at-rule-010.xht
+  - at-rule-013.xht
+  - eof-005.xht
+  - eof-006.xht
+  - import-*
diff --git a/css/css-cascade/parsing/WEB_FEATURES.yml b/css/css-cascade/parsing/WEB_FEATURES.yml
index 56f7e89b85a9ac..ffbe37c93bb0e0 100644
--- a/css/css-cascade/parsing/WEB_FEATURES.yml
+++ b/css/css-cascade/parsing/WEB_FEATURES.yml
@@ -2,3 +2,6 @@ features:
 - name: cascade-layers
   files:
   - layer.html
+- name: import
+  files:
+  - supports-import-parsing.html
diff --git a/css/cssom/WEB_FEATURES.yml b/css/cssom/WEB_FEATURES.yml
index f2c92925a3f789..1a8163c177b78e 100644
--- a/css/cssom/WEB_FEATURES.yml
+++ b/css/cssom/WEB_FEATURES.yml
@@ -35,3 +35,6 @@ features:
   files:
   - cssom-pagerule.html
   - page-descriptors.html
+- name: import
+  files:
+  - cssimportrule*