diff --git a/assets/css/main.scss b/assets/css/main.scss
index 6fbb901c28fd2c..16de2ad0dd33af 100644
--- a/assets/css/main.scss
+++ b/assets/css/main.scss
@@ -254,13 +254,13 @@ body {
 
   table thead th {
       border-bottom: 2px solid #777;
-      text-align: left;
+      text-align: inline-start;
   }
 
   table td:first-child, table th:first-child  {
       border-inline-end: 2px solid #777;
       font-weight: bold;
-      text-align: left;
+      text-align: inline-start;
   }
 
   table td:not(first-child), table th:not(first-child) {
@@ -1263,6 +1263,7 @@ table.contributions{
 div.highlight {
 	position: relative;
 }
+/* Code copy button */
 div.highlight .btn{
 	-webkit-transition:opacity .3s ease-in-out;
 	-o-transition:opacity .3s ease-in-out;
@@ -1270,7 +1271,7 @@ div.highlight .btn{
 	opacity:0;
 	padding:2px 6px;
 	position:absolute;
-	right:4px;
+	inset-inline-end:4px;
 	top:4px;
 }
 
@@ -1476,7 +1477,7 @@ div.contributors-line {
     }
     dt {
       width: 8em;
-      text-align: right;
+      text-align: end;
       font-weight: initial;
     }
     dd {
@@ -1786,7 +1787,7 @@ figure > a[target="_blank"]::after {
 		}
 
 		figcaption {
-			text-align: left;
+			text-align: start;
 		}
 	}
 
@@ -1929,7 +1930,7 @@ body[data-brightness="dark"] {
         width: 25%;
 	}
     table tr td:nth-child(2) {
-		text-align: left;
+		text-align: start;
         display: table-cell;
         width: 100%;
 	}
diff --git a/bin/lint.rb b/bin/lint.rb
index 2562b12f6cfef0..9a32642a949ebb 100755
--- a/bin/lint.rb
+++ b/bin/lint.rb
@@ -916,7 +916,55 @@ def self.fix_ga_wf(contents)
 
   def self.fix_css(contents)
     results = []
-    results += find_matching_texts(contents, /-(left|right)/)
+    results += find_matching_texts(contents, /margin-left/)
+               .map do |idx, _text, selected|
+      ReviewDogEmitter.warning(
+        path: @path,
+        idx: idx,
+        match_start: selected.begin(1),
+        match_end: selected.end(1) + 1,
+        replacement: 'margin-inline-start',
+        message: 'Use margin-inline-start to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
+        code: 'GTN:037'
+      )
+    end
+    results += find_matching_texts(contents, /margin-right/)
+               .map do |idx, _text, selected|
+      ReviewDogEmitter.warning(
+        path: @path,
+        idx: idx,
+        match_start: selected.begin(1),
+        match_end: selected.end(1) + 1,
+        replacement: 'margin-inline-end',
+        message: 'Use margin-inline-end to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
+        code: 'GTN:037'
+      )
+    end
+    results += find_matching_texts(contents, /padding-left/)
+               .map do |idx, _text, selected|
+      ReviewDogEmitter.warning(
+        path: @path,
+        idx: idx,
+        match_start: selected.begin(1),
+        match_end: selected.end(1) + 1,
+        replacement: 'padding-inline-start',
+        message: 'Use padding-inline-start to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
+        code: 'GTN:037'
+      )
+    end
+    results += find_matching_texts(contents, /padding-right/)
+               .map do |idx, _text, selected|
+      ReviewDogEmitter.warning(
+        path: @path,
+        idx: idx,
+        match_start: selected.begin(1),
+        match_end: selected.end(1) + 1,
+        replacement: 'padding-inline-end',
+        message: 'Use padding-inline-end to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
+        code: 'GTN:037'
+      )
+    end
+    results += find_matching_texts(contents, /(left|[^b]right)/)
                .map do |idx, _text, selected|
       ReviewDogEmitter.warning(
         path: @path,
@@ -924,10 +972,11 @@ def self.fix_css(contents)
         match_start: selected.begin(1),
         match_end: selected.end(1) + 1,
         replacement: '',
-        message: 'Use -start and -end instead of -left and -right to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
+        message: 'Use start/end to support right-to-left languages See: https://firefox-source-docs.mozilla.org/code-quality/coding-style/rtl_guidelines.html',
         code: 'GTN:037'
       )
     end
+
     results
   end