diff --git a/openbis_ng_ui/index.html b/openbis_ng_ui/index.html
index 8d6d4ada6e5414d2764a2559b5414a4574c6d966..82425798c1ed9091c5e265f308ab7d4ed670c1e5 100644
--- a/openbis_ng_ui/index.html
+++ b/openbis_ng_ui/index.html
@@ -5,6 +5,9 @@
     <meta charset="utf-8" />
     <link rel="shortcut icon" href="#" />
     <style>
+      html {
+        font-size: 16px;
+      }
       body {
         height: 100%;
         min-height: 100%;
@@ -23,7 +26,7 @@
     </style>
     <script>
       function loadError() {
-        window.onload = function() {
+        window.onload = function () {
           let text = 'Error: Could not connect to openBIS.'
           let h2 = document.createElement('h2')
           var textnode = document.createTextNode(text)