Adjsut fuzzy match parameters to unbreak Firefox. (#35731)

Also increase the tolerance a bit more to make this test work on more WebKit ports.
diff --git a/css/selectors/dir-style-01a.html b/css/selectors/dir-style-01a.html
index 78729b2..d206c60 100644
--- a/css/selectors/dir-style-01a.html
+++ b/css/selectors/dir-style-01a.html
@@ -8,7 +8,7 @@
     <link rel="help" href="https://drafts.csswg.org/selectors-4/#the-dir-pseudo">
     <meta name="assert" content="Test checks :dir() basic functions with valid and invalid values.">
     <link rel="match" href="dir-style-01-ref.html">
-    <meta name="fuzzy" content="maxDifference=155; totalPixels=10">
+    <meta name="fuzzy" content="maxDifference=255; totalPixels=0-20">
     <style>
       div { text-align: left; }
       :dir(ltr) { color: blue }
diff --git a/css/selectors/dir-style-01b.html b/css/selectors/dir-style-01b.html
index 1be9dba..86ec24c 100644
--- a/css/selectors/dir-style-01b.html
+++ b/css/selectors/dir-style-01b.html
@@ -8,7 +8,7 @@
     <link rel="help" href="https://drafts.csswg.org/selectors-4/#the-dir-pseudo">
     <meta name="assert" content="Test checks :dir() basic functions after dynamic directionality change on elements.">
     <link rel="match" href="dir-style-01-ref.html">
-    <meta name="fuzzy" content="maxDifference=155; totalPixels=10">
+    <meta name="fuzzy" content="maxDifference=255; totalPixels=0-20">
     <style>
       div { text-align: left; }
       :dir(ltr) { color: blue }