diff --git a/sd-card/html/index.html b/sd-card/html/index.html
index b57c64dd..f5af90fc 100644
--- a/sd-card/html/index.html
+++ b/sd-card/html/index.html
@@ -24,24 +24,25 @@
 </table>
 
 <ul>
-  <li><a href="#"onclick="document.getElementById('maincontent').src = '/wasserzaehler_roi.html';">Overview</a></li>
-	<li class="dropdown">
+    <li><a href="#"onclick="document.getElementById('maincontent').src = '/wasserzaehler_roi.html';">Overview</a></li>
+    <li class="dropdown">
 	<a href="javascript:void(0)" class="dropbtn">Configuration</a>
 	<div class="dropdown-content">
-	  <a href="#"onclick="document.getElementById('maincontent').src = '/prevalue_set.html';">Set preValue</a>
-	  <a href="index_configure.html">Edit Configuration</a>
+	    <a href="#"onclick="document.getElementById('maincontent').src = '/prevalue_set.html';">Set Previous Value</a>
+	    <a href="index_configure.html">Edit Configuration</a>
 	</div>
-  </li>
-  <li><a href="#"onclick="document.getElementById('maincontent').src = '/wasserzaehler.html?full';">Recognition</a></li>
-  <li><a href="#"onclick="document.getElementById('maincontent').src = '/fileserver/';">File Server</a></li>
-	<li class="dropdown">
+    </li>
+    <li><a href="#"onclick="document.getElementById('maincontent').src = '/wasserzaehler.html?full';">Recognition</a></li>
+    <li><a href="#"onclick="document.getElementById('maincontent').src = '/fileserver/';">File Server</a></li>
+    <li class="dropdown">
 	<a href="javascript:void(0)" class="dropbtn">System</a>
 	<div class="dropdown-content">
-	  <a href="#"onclick="document.getElementById('maincontent').src = '/ota_page.html';">OTA Update</a>
-	  <a href="#"onclick="document.getElementById('maincontent').src = '/fileserver/log/message/?readonly=true';">Log Viewer</a>      
-	  <a href="#"onclick="document.getElementById('maincontent').src = '/reboot_page.html';">Reboot</a>
-	  <a href="#"onclick="document.getElementById('maincontent').src = '/info.html';">Info</a>      
+	    <a href="#"onclick="document.getElementById('maincontent').src = '/ota_page.html';">OTA Update</a>
+	    <a href="#"onclick="document.getElementById('maincontent').src = '/fileserver/log/message/?readonly=true';">Log Viewer</a>      
+	    <a href="#"onclick="document.getElementById('maincontent').src = '/reboot_page.html';">Reboot</a>
+	    <a href="#"onclick="document.getElementById('maincontent').src = '/info.html';">Info</a>      
 	</div> 
+    </li>
 </ul>
 
 <iframe name="maincontent" class="iframe" id="maincontent" src="wasserzaehler_roi.html"></iframe>