Templating/Custom-CSS.md

@@ -16,6 +16,20 @@ div.slides {
   background-color: #ddd;
 }
 ```
+---
 
+## Adding a background image to all slides
+
+If you want to include a background image on **all** slides, e.g. the Uni Würzburg banner you can do this by adding the following code to the CSS file
+
+```
+body {
+  background: url( "assets/title-banner-jmu.jpg" );
+  background-size: contain;
+  background-repeat: no-repeat;
+}
+```
+
+Keep in mind that if a slide has a lot of text content it is possible that the slide title will overlay the banner