Adjust fuzzy metadata for various css/css-masking tests (#41654)

diff --git a/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html b/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html
index d42b2fe..5346a4c 100644
--- a/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html
+++ b/css/css-masking/clip-path/animations/clip-path-animation-custom-timing-function-reverse.html
@@ -2,7 +2,7 @@
 <html class="reftest-wait">
 <link rel="help" href="https://drafts.csswg.org/css-shapes-1/#basic-shape-interpolation">
 <link rel="match" href="clip-path-animation-custom-timing-function-reverse-ref.html">
-<meta name=fuzzy content="0-1;0-350">
+<meta name="fuzzy" content="maxDifference=0-20; totalPixels=0-692" />
 <!--
   Test that ensures that the bounding rect for a clip path animation is not
   limited to the size of the largest keyframe.a.
diff --git a/css/css-masking/clip-path/clip-path-borderBox-1a.html b/css/css-masking/clip-path/clip-path-borderBox-1a.html
index a15ef09..c0304a5 100644
--- a/css/css-masking/clip-path/clip-path-borderBox-1a.html
+++ b/css/css-masking/clip-path/clip-path-borderBox-1a.html
@@ -7,7 +7,7 @@
     <link rel="author" title="Mozilla" href="https://www.mozilla.org">
     <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-clip-path">
     <link rel="match" href="clip-path-geometryBox-1-ref.html">
-    <meta name="fuzzy" content="maxDifference=0-96; totalPixels=0-400">
+    <meta name="fuzzy" content="maxDifference=0-100; totalPixels=0-400">
     <meta name="assert" content="Test checks whether clip-path border-box works correctly or not. This test is for clip-path applied to an HTML element.">
     <style>
       div {
diff --git a/css/css-masking/clip-path/clip-path-round-zero-size.html b/css/css-masking/clip-path/clip-path-round-zero-size.html
index 32396fa..59404f8 100644
--- a/css/css-masking/clip-path/clip-path-round-zero-size.html
+++ b/css/css-masking/clip-path/clip-path-round-zero-size.html
@@ -7,7 +7,7 @@
 <link rel="author" title="Mozilla" href="https://mozilla.org">
 <link rel="match" href="clip-path-round-zero-size-ref.html">
 <!-- Allow differences of antialised pixels along rounded edges -->
-<meta name="fuzzy" content="0-64;0-28">
+<meta name="fuzzy" content="maxDifference=0-64;totalPixels=0-100">
 <style>
 #target {
   margin: 50px;