diff --git a/private/less/size.less b/private/less/size.less
deleted file mode 100644
index a5089addc9..0000000000
--- a/private/less/size.less
+++ /dev/null
@@ -1,2 +0,0 @@
-@import "../../src/less/resource/size";
-@import "var";
\ No newline at end of file
diff --git a/public/less/size.less b/public/less/size.less
deleted file mode 100644
index a5089addc9..0000000000
--- a/public/less/size.less
+++ /dev/null
@@ -1,2 +0,0 @@
-@import "../../src/less/resource/size";
-@import "var";
\ No newline at end of file
diff --git a/src/less/core/normalize2.less b/src/less/core/normalize2.less
index 9ca67b7b76..cb936708db 100644
--- a/src/less/core/normalize2.less
+++ b/src/less/core/normalize2.less
@@ -15,59 +15,6 @@ p,
   padding: 0;
 }
 
-html {
-  height: 100%;
-  overflow: hidden;
-}
-
-body {
-  position: absolute;
-  width: 100%;
-  height: 100%;
-  margin: 0;
-  padding: 0;
-  top: 0;
-  left: 0;
-  background-repeat: repeat;
-  .user-select-disable();
-  color: @color-bi-text-normal;
-  font: normal 12px "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Heiti, "黑体", sans-serif;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-  text-decoration: none;
-  -kthml-user-focus: normal;
-  -moz-user-focus: normal;
-  -moz-outline: 0 none;
-  outline: 0 none;
-}
-
-div, textarea {
-  &::-webkit-scrollbar {
-    -webkit-appearance: none;
-    width: 10px;
-    height: 10px;
-  }
-  &::-webkit-scrollbar-track {
-    .border-radius(5px);
-    .background-color(@scroll-color, 5%);
-    &:hover {
-      .background-color(@scroll-color, 5%);
-    }
-  }
-  &::-webkit-scrollbar-thumb {
-    border: 2px solid transparent;
-    background-clip: padding-box;
-    .border-radius(10px);
-    .background-color(@scroll-color, 10%);
-    &:hover {
-      .background-color(@scroll-color, 30%);
-    }
-  }
-  &::-webkit-scrollbar-corner {
-    background-color: transparent;
-  }
-}
-
 a {
   outline: none;
   text-decoration: none;
diff --git a/src/less/core/utils/size.less b/src/less/core/utils/size.less
new file mode 100644
index 0000000000..e14cca14c1
--- /dev/null
+++ b/src/less/core/utils/size.less
@@ -0,0 +1,17 @@
+@import "../../lib/constant";
+@import "../../image";
+
+.iconSize(icon-size-12, @font-size-12);
+.iconSize(icon-size-13, @font-size-13);
+.iconSize(icon-size-14, @font-size-14);
+.iconSize(icon-size-15, @font-size-15);
+.iconSize(icon-size-16, @font-size-16);
+.iconSize(icon-size-18, @font-size-18);
+.iconSize(icon-size-20, @font-size-20);
+.iconSize(icon-size-22, @font-size-22);
+.iconSize(icon-size-24, @font-size-24);
+.iconSize(icon-size-30, @font-size-30);
+.iconSize(icon-size-40, @font-size-40);
+.iconSize(icon-size-50, @font-size-50);
+.iconSize(icon-size-60, @font-size-60);
+.iconSize(icon-size-70, @font-size-70);
diff --git a/src/less/resource/app.less b/src/less/resource/app.less
index ace45dfb59..be0fc512dc 100644
--- a/src/less/resource/app.less
+++ b/src/less/resource/app.less
@@ -1,21 +1,83 @@
 @import "../index";
 
+html {
+  height: 100%;
+  overflow: hidden;
+}
+
+body {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  top: 0;
+  left: 0;
+  background-repeat: repeat;
+  .user-select-disable();
+  color: @color-bi-text-normal;
+  font: normal 12px "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", Heiti, "黑体", sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-decoration: none;
+  -kthml-user-focus: normal;
+  -moz-user-focus: normal;
+  -moz-outline: 0 none;
+  outline: 0 none;
+}
+
+div, textarea {
+  &::-webkit-scrollbar {
+    -webkit-appearance: none;
+    width: 10px;
+    height: 10px;
+  }
+
+  &::-webkit-scrollbar-track {
+    .border-radius(5px);
+    .background-color(@scroll-color, 5%);
+
+    &:hover {
+      .background-color(@scroll-color, 5%);
+    }
+  }
+
+  &::-webkit-scrollbar-thumb {
+    border: 2px solid transparent;
+    background-clip: padding-box;
+    .border-radius(10px);
+    .background-color(@scroll-color, 10%);
+
+    &:hover {
+      .background-color(@scroll-color, 30%);
+    }
+  }
+
+  &::-webkit-scrollbar-corner {
+    background-color: transparent;
+  }
+}
+
 .bi-theme-dark {
   div, textarea {
     &::-webkit-scrollbar {
       -webkit-appearance: none;
     }
+
     &::-webkit-scrollbar-track {
       .background-color(@scroll-color-theme-dark, 5%);
+
       &:hover {
         .background-color(@scroll-color-theme-dark, 5%);
       }
     }
+
     &::-webkit-scrollbar-thumb {
       .background-color(@scroll-color-theme-dark, 10%);
+
       &:hover {
         .background-color(@scroll-color-theme-dark, 30%);
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/src/less/resource/size.less b/src/less/resource/size.less
deleted file mode 100644
index 11e8a57ce7..0000000000
--- a/src/less/resource/size.less
+++ /dev/null
@@ -1,9 +0,0 @@
-@import "../lib/constant";
-@import "../image";
-
-.iconSize(icon-size-12, @font-size-12);
-.iconSize(icon-size-16, @font-size-16);
-.iconSize(icon-size-24, @font-size-24);
-.iconSize(icon-size-40, @font-size-40);
-.iconSize(icon-size-50, @font-size-50);
-.iconSize(icon-size-70, @font-size-70);
\ No newline at end of file
diff --git a/ui/less/size.less b/ui/less/size.less
deleted file mode 100644
index a5089addc9..0000000000
--- a/ui/less/size.less
+++ /dev/null
@@ -1,2 +0,0 @@
-@import "../../src/less/resource/size";
-@import "var";
\ No newline at end of file
diff --git a/webpack/attachments.js b/webpack/attachments.js
index 7655c1408c..f8c94da9ce 100644
--- a/webpack/attachments.js
+++ b/webpack/attachments.js
@@ -134,7 +134,6 @@ const bundleWithoutNormalize = [].concat(
     sync([
         "src/less/base/**/*.less",
         "src/less/widget/**/*.less",
-        "public/less/app.less",
         "public/less/**/*.less",
         // ts的less
     ]),