diff --git a/test/testdata/chromium/html/footer.html b/test/testdata/chromium/html/footer.html
index 71749d08..c355f721 100644
--- a/test/testdata/chromium/html/footer.html
+++ b/test/testdata/chromium/html/footer.html
@@ -2,8 +2,8 @@
 <head>
     <style>
         body {
-            font-size: 30rem;
-            margin: 4rem auto;
+            font-size: 12px;
+            margin: auto 20px;
         }
     </style>
 </head>
diff --git a/test/testdata/chromium/html/header.html b/test/testdata/chromium/html/header.html
index 00ab687b..213ec4fc 100644
--- a/test/testdata/chromium/html/header.html
+++ b/test/testdata/chromium/html/header.html
@@ -2,8 +2,8 @@
 <head>
     <style>
         body {
-            font-size: 8rem;
-            margin: 4rem auto;
+            font-size: 12px;
+            margin: auto 20px;
         }
     </style>
 </head>
diff --git a/test/testdata/chromium/markdown/footer.html b/test/testdata/chromium/markdown/footer.html
index 22bae5d2..c355f721 100644
--- a/test/testdata/chromium/markdown/footer.html
+++ b/test/testdata/chromium/markdown/footer.html
@@ -2,8 +2,8 @@
 <head>
     <style>
         body {
-            font-size: 8rem;
-            margin: 4rem auto;
+            font-size: 12px;
+            margin: auto 20px;
         }
     </style>
 </head>
diff --git a/test/testdata/chromium/markdown/header.html b/test/testdata/chromium/markdown/header.html
index 00ab687b..213ec4fc 100644
--- a/test/testdata/chromium/markdown/header.html
+++ b/test/testdata/chromium/markdown/header.html
@@ -2,8 +2,8 @@
 <head>
     <style>
         body {
-            font-size: 8rem;
-            margin: 4rem auto;
+            font-size: 12px;
+            margin: auto 20px;
         }
     </style>
 </head>
