diff --git a/packages/vant-cli/site/common/style/var.less b/packages/vant-cli/site/common/style/var.less
index 666ad324f..d80cd6329 100644
--- a/packages/vant-cli/site/common/style/var.less
+++ b/packages/vant-cli/site/common/style/var.less
@@ -24,6 +24,4 @@
 
 // simulator
 @van-doc-simulator-width: 360px;
-@van-doc-simulator-small-width: 320px;
 @van-doc-simulator-height: 620px;
-@van-doc-simulator-small-height: 560px;
diff --git a/packages/vant-cli/site/desktop/components/Container.vue b/packages/vant-cli/site/desktop/components/Container.vue
index 712c748f3..bc82f301b 100644
--- a/packages/vant-cli/site/desktop/components/Container.vue
+++ b/packages/vant-cli/site/desktop/components/Container.vue
@@ -27,6 +27,10 @@ export default {
 
   &--with-simulator {
     padding-right: @van-doc-simulator-width + @van-doc-padding;
+
+    @media (max-width: 1100px) {
+      padding-right: @van-doc-simulator-width - 8px;
+    }
   }
 }
 </style>
diff --git a/packages/vant-cli/src/config/vite.site.ts b/packages/vant-cli/src/config/vite.site.ts
index 76b2e0bf9..04c25847c 100644
--- a/packages/vant-cli/src/config/vite.site.ts
+++ b/packages/vant-cli/src/config/vite.site.ts
@@ -166,8 +166,6 @@ export function getViteConfigForSiteProd(): InlineConfig {
       outDir,
       brotliSize: false,
       emptyOutDir: true,
-      // reduce small CSS files
-      cssCodeSplit: false,
       rollupOptions: {
         input: {
           main: join(SITE_SRC_DIR, 'index.html'),