diff --git a/.changeset/poor-candles-vanish.md b/.changeset/poor-candles-vanish.md
new file mode 100644
index 00000000..a774deb7
--- /dev/null
+++ b/.changeset/poor-candles-vanish.md
@@ -0,0 +1,5 @@
+---
+"@devup-ui/wasm": patch
+---
+
+Fix n, m logic to avoid adblock
diff --git a/libs/css/src/constant.rs b/libs/css/src/constant.rs
index 585647f2..ba095ff8 100644
--- a/libs/css/src/constant.rs
+++ b/libs/css/src/constant.rs
@@ -163,12 +163,12 @@ pub(super) static F_RGBA_RE: Lazy<Regex> =
 pub(super) static F_RGB_RE: Lazy<Regex> =
     Lazy::new(|| Regex::new(r"rgb\((\d+),(\d+),(\d+)\)").unwrap());
 
-pub(super) static N_BASE_ARRAY: [char; 26] = [
+pub(super) static N_BASE_ARRAY: [char; 27] = [
     'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
-    't', 'u', 'v', 'w', 'x', 'y', 'z',
+    't', 'u', 'v', 'w', 'x', 'y', 'z', '_',
 ];
 
-pub(super) static M_BASE_ARRAY: [char; 36] = [
+pub(super) static M_BASE_ARRAY: [char; 37] = [
     'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's',
-    't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+    't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '_',
 ];
diff --git a/libs/css/src/lib.rs b/libs/css/src/lib.rs
index c17cc0a8..23e29aab 100644
--- a/libs/css/src/lib.rs
+++ b/libs/css/src/lib.rs
@@ -155,8 +155,7 @@ pub fn sheet_to_classname(
             });
         if !filename.is_empty() {
             format!(
-                // avoid g-ad class (google ad)
-                "{}_{}",
+                "{}-{}",
                 num_to_nm_base(get_file_num_by_filename(&filename)),
                 clas_num
             )
diff --git a/libs/css/src/num_to_nm_base.rs b/libs/css/src/num_to_nm_base.rs
index c0be4248..c33bd2c5 100644
--- a/libs/css/src/num_to_nm_base.rs
+++ b/libs/css/src/num_to_nm_base.rs
@@ -24,7 +24,12 @@ pub fn num_to_nm_base(num: usize) -> String {
             }
         }
     }
-    result
+    if result.ends_with("ad") {
+        // avoid g-ad class (google ad)
+        result.replace("ad", "a-d")
+    } else {
+        result
+    }
 }
 
 #[cfg(test)]
@@ -59,72 +64,74 @@ mod tests {
     #[case(23, "x")]
     #[case(24, "y")]
     #[case(25, "z")]
-    #[case(26, "aa")]
-    #[case(27, "ab")]
-    #[case(28, "ac")]
-    #[case(29, "ad")]
-    #[case(30, "ae")]
-    #[case(31, "af")]
-    #[case(32, "ag")]
-    #[case(33, "ah")]
-    #[case(34, "ai")]
-    #[case(35, "aj")]
-    #[case(36, "ak")]
-    #[case(37, "al")]
-    #[case(38, "am")]
-    #[case(39, "an")]
-    #[case(40, "ao")]
-    #[case(41, "ap")]
-    #[case(42, "aq")]
-    #[case(43, "ar")]
-    #[case(44, "as")]
-    #[case(45, "at")]
-    #[case(46, "au")]
-    #[case(47, "av")]
-    #[case(48, "aw")]
-    #[case(49, "ax")]
-    #[case(50, "ay")]
-    #[case(51, "az")]
-    #[case(52, "a0")]
-    #[case(53, "a1")]
-    #[case(54, "a2")]
-    #[case(55, "a3")]
-    #[case(56, "a4")]
-    #[case(57, "a5")]
-    #[case(58, "a6")]
-    #[case(59, "a7")]
-    #[case(60, "a8")]
-    #[case(61, "a9")]
-    #[case(62, "ba")]
-    #[case(63, "bb")]
-    #[case(64, "bc")]
-    #[case(65, "bd")]
-    #[case(66, "be")]
-    #[case(67, "bf")]
-    #[case(68, "bg")]
-    #[case(69, "bh")]
-    #[case(70, "bi")]
-    #[case(71, "bj")]
-    #[case(72, "bk")]
-    #[case(73, "bl")]
-    #[case(74, "bm")]
-    #[case(75, "bn")]
-    #[case(76, "bo")]
-    #[case(77, "bp")]
-    #[case(78, "bq")]
-    #[case(79, "br")]
-    #[case(80, "bs")]
-    #[case(81, "bt")]
-    #[case(82, "bu")]
-    #[case(83, "bv")]
-    #[case(84, "bw")]
-    #[case(85, "bx")]
-    #[case(86, "by")]
-    #[case(87, "bz")]
-    #[case(88, "b0")]
-    #[case(89, "b1")]
-    #[case(961, "z9")]
-    #[case(962, "aaa")]
+    #[case(26, "_")]
+    #[case(27, "aa")]
+    #[case(28, "ab")]
+    #[case(29, "ac")]
+    #[case(30, "a-d")]
+    #[case(31, "ae")]
+    #[case(32, "af")]
+    #[case(33, "ag")]
+    #[case(34, "ah")]
+    #[case(35, "ai")]
+    #[case(36, "aj")]
+    #[case(37, "ak")]
+    #[case(38, "al")]
+    #[case(39, "am")]
+    #[case(40, "an")]
+    #[case(41, "ao")]
+    #[case(42, "ap")]
+    #[case(43, "aq")]
+    #[case(44, "ar")]
+    #[case(45, "as")]
+    #[case(46, "at")]
+    #[case(47, "au")]
+    #[case(48, "av")]
+    #[case(49, "aw")]
+    #[case(50, "ax")]
+    #[case(51, "ay")]
+    #[case(52, "az")]
+    #[case(53, "a0")]
+    #[case(54, "a1")]
+    #[case(55, "a2")]
+    #[case(56, "a3")]
+    #[case(57, "a4")]
+    #[case(58, "a5")]
+    #[case(59, "a6")]
+    #[case(60, "a7")]
+    #[case(61, "a8")]
+    #[case(62, "a9")]
+    #[case(63, "a_")]
+    #[case(64, "ba")]
+    #[case(65, "bb")]
+    #[case(66, "bc")]
+    #[case(67, "bd")]
+    #[case(68, "be")]
+    #[case(69, "bf")]
+    #[case(70, "bg")]
+    #[case(71, "bh")]
+    #[case(72, "bi")]
+    #[case(73, "bj")]
+    #[case(74, "bk")]
+    #[case(75, "bl")]
+    #[case(76, "bm")]
+    #[case(77, "bn")]
+    #[case(78, "bo")]
+    #[case(79, "bp")]
+    #[case(80, "bq")]
+    #[case(81, "br")]
+    #[case(82, "bs")]
+    #[case(83, "bt")]
+    #[case(84, "bu")]
+    #[case(85, "bv")]
+    #[case(86, "bw")]
+    #[case(87, "bx")]
+    #[case(88, "by")]
+    #[case(89, "bz")]
+    #[case(90, "b0")]
+    #[case(91, "b1")]
+    #[case(987, "z9")]
+    #[case(1026, "aaa")]
     fn test_num_to_nm_base_rstest(#[case] input: usize, #[case] expected: &str) {
         assert_eq!(num_to_nm_base(input), expected);
     }
diff --git a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-2.snap b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-2.snap
index 9536c88e..e316a3f8 100644
--- a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-2.snap
+++ b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-2.snap
@@ -23,5 +23,5 @@ ToBTreeSet {
             },
         ),
     },
-    code: "import \"@devup-ui/core/devup-ui-0.css\";\n<div className=\"a_c a_d\" />;\n",
+    code: "import \"@devup-ui/core/devup-ui-0.css\";\n<div className=\"a-c a-d\" />;\n",
 }
diff --git a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-3.snap b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-3.snap
index 1946e0b1..bc3c3ce7 100644
--- a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-3.snap
+++ b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-3.snap
@@ -23,5 +23,5 @@ ToBTreeSet {
             },
         ),
     },
-    code: "import \"@devup-ui/core/devup-ui-1.css\";\n<div className=\"b_a b_b\" />;\n",
+    code: "import \"@devup-ui/core/devup-ui-1.css\";\n<div className=\"b-a b-b\" />;\n",
 }
diff --git a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-4.snap b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-4.snap
index f30b43d9..95377a9c 100644
--- a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-4.snap
+++ b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files-4.snap
@@ -23,5 +23,5 @@ ToBTreeSet {
             },
         ),
     },
-    code: "import \"@devup-ui/core/devup-ui-1.css\";\n<div className=\"b_c b_d\" />;\n",
+    code: "import \"@devup-ui/core/devup-ui-1.css\";\n<div className=\"b-c b-d\" />;\n",
 }
diff --git a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files.snap b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files.snap
index df11ea3a..34220c2d 100644
--- a/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files.snap
+++ b/libs/extractor/src/snapshots/extractor__tests__extract_just_tsx_in_multiple_files.snap
@@ -23,5 +23,5 @@ ToBTreeSet {
             },
         ),
     },
-    code: "import \"@devup-ui/core/devup-ui-0.css\";\n<div className=\"a_a a_b\" />;\n",
+    code: "import \"@devup-ui/core/devup-ui-0.css\";\n<div className=\"a-a a-b\" />;\n",
 }