maintain existing behavior

emilykl · emilykl · commit 901ca732b932 · 2026-08-07T00:04:44.000-04:00
diff --git a/plotly/io/_html.py b/plotly/io/_html.py
@@ -341,7 +341,10 @@ def to_html(
         return """\
 <!doctype html>
 <html>
-<head><meta charset="utf-8" /></head>
+<head>
+    <meta charset="utf-8" />
+    <style>html, body {{height: 100%;}}</style>
+</head>
 <body>
     {div}
 </body>
