diff --git a/index.html b/index.html
index 42f68a1..2b07cc1 100755
--- a/index.html
+++ b/index.html
@@ -51,14 +51,14 @@
     <!--</svg>-->
     <canvas id="preview"></canvas>
     <canvas id="preview_tmp"></canvas>
-    <div class="buttons cf">
+    <div class="manipulationBtns cf">
       <div id="btnsUpDown">
-        <div id="btnMoveUp"></div>
-        <div id="btnMoveDown"></div>
+        <div class="manipulationBtn" id="btnMoveUp"></div>
+        <div class="manipulationBtn" id="btnMoveDown"></div>
       </div>
       <div id="btnsTurnLeftRight">
-        <div id="btnTwistLeft"></div>
-        <div id="btnTwistRight"></div>
+        <div class="manipulationBtn" id="btnTwistLeft"></div>
+        <div class="manipulationBtn" id="btnTwistRight"></div>
       </div>
     </div>
   </div>
@@ -72,7 +72,7 @@
       </header>
       <div class="content">
         <div class="settings">henk</div>
-        <div class="buttons">
+        <div class="manipulationBtns">
           <div class="btnOK"></div>
         </div>
       </div>