diff --git a/doc/code-cells.ipynb b/doc/code-cells.ipynb
index ecdf3877..f98c5a70 100644
--- a/doc/code-cells.ipynb
+++ b/doc/code-cells.ipynb
@@ -132,6 +132,23 @@
     "\"I'm the 'normal' output\""
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Very long output (>600px) is scrolled:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "for i in range(50):\n",
+    "    print(i)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/src/nbsphinx/_static/nbsphinx-code-cells.css_t b/src/nbsphinx/_static/nbsphinx-code-cells.css_t
index c3fd7e35..5724e568 100644
--- a/src/nbsphinx/_static/nbsphinx-code-cells.css_t
+++ b/src/nbsphinx/_static/nbsphinx-code-cells.css_t
@@ -128,6 +128,11 @@ div.nboutput.container div.output_area {
         width: 100%;
     }
 }
+/* scroll long text outputs vertically */
+div.nboutput.container div.output_area:has(pre) {
+    max-height: 600px;
+}
+
 
 /* input area */
 div.nbinput.container div.input_area {