diff --git a/testing/web-platform/meta/MANIFEST.json b/testing/web-platform/meta/MANIFEST.json
index c7384cbc08b0..ccb5c9c86704 100644
--- a/testing/web-platform/meta/MANIFEST.json
+++ b/testing/web-platform/meta/MANIFEST.json
@@ -146383,6 +146383,18 @@
{}
]
],
+ "css/css-values/calc-ch-ex-lang.html": [
+ [
+ "/css/css-values/calc-ch-ex-lang.html",
+ [
+ [
+ "/css/css-values/calc-ch-ex-lang-ref.html",
+ "=="
+ ]
+ ],
+ {}
+ ]
+ ],
"css/css-values/calc-in-calc.html": [
[
"/css/css-values/calc-in-calc.html",
@@ -146443,6 +146455,18 @@
{}
]
],
+ "css/css-values/calc-rem-lang.html": [
+ [
+ "/css/css-values/calc-rem-lang.html",
+ [
+ [
+ "/css/css-values/calc-rem-lang-ref.html",
+ "=="
+ ]
+ ],
+ {}
+ ]
+ ],
"css/css-values/ch-unit-001.html": [
[
"/css/css-values/ch-unit-001.html",
@@ -253668,6 +253692,16 @@
{}
]
],
+ "css/css-values/calc-ch-ex-lang-ref.html": [
+ [
+ {}
+ ]
+ ],
+ "css/css-values/calc-rem-lang-ref.html": [
+ [
+ {}
+ ]
+ ],
"css/css-values/ex-calc-expression-001-ref.html": [
[
{}
@@ -510100,6 +510134,14 @@
"70627dbbfc5af5fb859fdf1362f0004b38c64e34",
"reftest"
],
+ "css/css-values/calc-ch-ex-lang-ref.html": [
+ "218e1cb6782b554de35aad70913cddb8e7d71da2",
+ "support"
+ ],
+ "css/css-values/calc-ch-ex-lang.html": [
+ "d15f42e237b281793ac808e06af92217d4f9593e",
+ "reftest"
+ ],
"css/css-values/calc-in-calc.html": [
"be08a1510714e8b4fbc4d35582db5708924d06b2",
"reftest"
@@ -510120,6 +510162,14 @@
"080551c1bee3d7bf54dda2c3d5b7e5a9fbd8aed6",
"reftest"
],
+ "css/css-values/calc-rem-lang-ref.html": [
+ "08bbc95f3078421a489e1e93cc7a4f035af40d5b",
+ "support"
+ ],
+ "css/css-values/calc-rem-lang.html": [
+ "6fa668d2bcaf01f5c4680e3e14a0e86160d1b5d5",
+ "reftest"
+ ],
"css/css-values/calc-unit-analysis.html": [
"c5fd567b4fa257ce53c48ebf8c444bf382459fec",
"testharness"
diff --git a/testing/web-platform/tests/css/css-values/calc-ch-ex-lang-ref.html b/testing/web-platform/tests/css/css-values/calc-ch-ex-lang-ref.html
new file mode 100644
index 000000000000..e0ac1ead1e52
--- /dev/null
+++ b/testing/web-platform/tests/css/css-values/calc-ch-ex-lang-ref.html
@@ -0,0 +1,12 @@
+
+CSS Test Reference
+
diff --git a/testing/web-platform/tests/css/css-values/calc-ch-ex-lang.html b/testing/web-platform/tests/css/css-values/calc-ch-ex-lang.html
new file mode 100644
index 000000000000..eb447475d528
--- /dev/null
+++ b/testing/web-platform/tests/css/css-values/calc-ch-ex-lang.html
@@ -0,0 +1,16 @@
+
+CSS Test: Calc in font-size with ch / ex units across lang changes
+CSS Test Reference
+You should see a green box twice-the-initial-font-size wide.
+
diff --git a/testing/web-platform/tests/css/css-values/calc-rem-lang.html b/testing/web-platform/tests/css/css-values/calc-rem-lang.html
new file mode 100644
index 000000000000..3994efc003b5
--- /dev/null
+++ b/testing/web-platform/tests/css/css-values/calc-rem-lang.html
@@ -0,0 +1,17 @@
+
+
+CSS Test: Calc with rem and relative units on the root element
+You should see a green box twice-the-initial-font-size wide.
+
+