Fix WGL logo position

Change-Id: I2ddf4594ed7481ef9b5004cda3ddcb1a88020eef
diff --git a/inst/reveal.js-5.1.0/css/theme/source/ids.scss b/inst/reveal.js-5.1.0/css/theme/source/ids.scss
index d952b48..4c30260 100644
--- a/inst/reveal.js-5.1.0/css/theme/source/ids.scss
+++ b/inst/reveal.js-5.1.0/css/theme/source/ids.scss
@@ -178,7 +178,7 @@
 
 @media only screen {
   .title-frame div.slide-background-content {
-    background-position: right 45px !important;
+    background-position: right 45px bottom 5px !important;
   }
 }