diff --git a/apps/client-standalone/src/lightweight/zip_export_provider_factory.ts b/apps/client-standalone/src/lightweight/zip_export_provider_factory.ts
index 2d967c7ee5..12e1f75e2b 100644
--- a/apps/client-standalone/src/lightweight/zip_export_provider_factory.ts
+++ b/apps/client-standalone/src/lightweight/zip_export_provider_factory.ts
@@ -1,10 +1,12 @@
 import { type ExportFormat, type ZipExportProviderData, ZipExportProvider } from "@triliumnext/core";
 
+import contentCss from "@triliumnext/ckeditor5/src/theme/ck-content.css?raw";
+
 export async function standaloneZipExportProviderFactory(format: ExportFormat, data: ZipExportProviderData): Promise<ZipExportProvider> {
     switch (format) {
         case "html": {
             const { default: HtmlExportProvider } = await import("@triliumnext/core/src/services/export/zip/html.js");
-            return new HtmlExportProvider(data);
+            return new HtmlExportProvider(data, { contentCss });
         }
         case "markdown": {
             const { default: MarkdownExportProvider } = await import("@triliumnext/core/src/services/export/zip/markdown.js");
diff --git a/apps/server/src/services/export/zip/factory.ts b/apps/server/src/services/export/zip/factory.ts
index d3d9a29508..db809b3e13 100644
--- a/apps/server/src/services/export/zip/factory.ts
+++ b/apps/server/src/services/export/zip/factory.ts
@@ -1,10 +1,21 @@
-import { type ExportFormat, type ZipExportProviderData, ZipExportProvider } from "@triliumnext/core";
+import { type ExportFormat, ZipExportProvider, type ZipExportProviderData } from "@triliumnext/core";
+import fs from "fs";
+import path from "path";
+
+import { getResourceDir, isDev } from "../../utils.js";
+
+function readContentCss(): string {
+    const cssFile = isDev
+        ? path.join(__dirname, "../../../../../../node_modules/ckeditor5/dist/ckeditor5-content.css")
+        : path.join(getResourceDir(), "ckeditor5-content.css");
+    return fs.readFileSync(cssFile, "utf-8");
+}
 
 export async function serverZipExportProviderFactory(format: ExportFormat, data: ZipExportProviderData): Promise<ZipExportProvider> {
     switch (format) {
         case "html": {
             const { default: HtmlExportProvider } = await import("@triliumnext/core/src/services/export/zip/html.js");
-            return new HtmlExportProvider(data);
+            return new HtmlExportProvider(data, { contentCss: readContentCss() });
         }
         case "markdown": {
             const { default: MarkdownExportProvider } = await import("@triliumnext/core/src/services/export/zip/markdown.js");
diff --git a/packages/trilium-core/src/services/export/zip/html.ts b/packages/trilium-core/src/services/export/zip/html.ts
index a92a981ca7..d5c165d23e 100644
--- a/packages/trilium-core/src/services/export/zip/html.ts
+++ b/packages/trilium-core/src/services/export/zip/html.ts
@@ -1,14 +1,24 @@
 import html from "html";
 
 import { escapeHtml } from "../../utils/index";
-import { ZipExportProvider } from "./abstract_provider.js";
+import { ZipExportProvider, ZipExportProviderData } from "./abstract_provider.js";
 import { NoteMeta } from "../../../meta";
 
+export interface HtmlExportProviderOptions {
+    contentCss?: string;
+}
+
 export default class HtmlExportProvider extends ZipExportProvider {
 
     private navigationMeta: NoteMeta | null = null;
     private indexMeta: NoteMeta | null = null;
     private cssMeta: NoteMeta | null = null;
+    private options: HtmlExportProviderOptions;
+
+    constructor(data: ZipExportProviderData, options?: HtmlExportProviderOptions) {
+        super(data);
+        this.options = options ?? {};
+    }
 
     prepareMeta(metaFile) {
         if (this.zipExportOptions?.skipExtraFiles) return;
@@ -168,12 +178,9 @@ export default class HtmlExportProvider extends ZipExportProvider {
             return;
         }
 
-        // TODO: Bring back CSS.
-        // const cssFile = isDev()
-        //     ? path.join(__dirname, "../../../../../../node_modules/ckeditor5/dist/ckeditor5-content.css")
-        //     : path.join(getResourceDir(), "ckeditor5-content.css");
-        // const cssContent = fs.readFileSync(cssFile, "utf-8");
-        // this.archive.append(cssContent, { name: cssMeta.dataFileName });
+        if (this.options.contentCss) {
+            this.archive.append(this.options.contentCss, { name: cssMeta.dataFileName });
+        }
     }
 
 }