Update index.html

index.html

@@ -4,6 +4,7 @@ section_id: home
 slides:
 - text: OPEN SOURCE DESIGN AND USABILITY SERVICES
   subtitle: Ura supports Open Source and Free Software Projects with Usability, Visual Identity and User Experience Design, no matter if small grassroots or established enterprise. We share Open Source Design principles.
+  overlay: on
   button:
     text: What is it?
     url: http://opensourcedesign.net
@@ -95,7 +96,9 @@ clients:
           </div>
           <div class="slide-left" style="background-color: {{ slide.bg_color }};">
           </div>
-          <div class="slide-right" style="background: url({{ slide.image }}) center center no-repeat;background-size: cover;">
+          {$ for overlay: on in slides in page.slides %}
+          <div class="slide-right overlay" style="background: url({{ slide.image }}) center center no-repeat;background-size: cover;">
+            {% endfor %} 
           </div>
         </div>
       {% endfor %}