diff --git a/css/flippy.css b/css/flippy.css
index a180f87..d547d19 100644
--- a/css/flippy.css
+++ b/css/flippy.css
@@ -66,7 +66,6 @@ flippy.fancy {
   float: left;
   margin: 0 10px 10px 0;
   position: relative;
-  font-size: .8em;
   cursor: pointer;
 }
 
diff --git a/css/pexeso.css b/css/pexeso.css
index f9622d3..766b970 100644
--- a/css/pexeso.css
+++ b/css/pexeso.css
@@ -6,7 +6,6 @@ body {
 
 #mainContent {
 	font-family: Arial, Helvetica, sans-serif;
-	font-size: xx-large;
 	font-weight: bold;
 	border-radius: 4px;
 	
@@ -57,4 +56,12 @@ body {
 
 #levelTitle {
 	float:right;
-}
\ No newline at end of file
+}
+
+.textCard {
+	height: 100%;
+}
+
+.textCardLabel {
+	margin-top: 15%;
+}
diff --git a/index.html b/index.html
index 6d367ce..81cf29b 100644
--- a/index.html
+++ b/index.html
@@ -68,7 +68,7 @@
     
             <flippy-back>
                 <span class="cardHelper" ng-show="card.cardType == 'picture'"></span><img ng-src="img/cards/{{card.image}}.png" ng-show="card.cardType == 'picture'">
-                <div ng-hide="card.cardType == 'picture'">{{card.label}}</div>
+                <div class="textCard" ng-hide="card.cardType == 'picture'"><div class="textCardLabel">{{card.label}}</div></div>
             </flippy-back>
             
     
diff --git a/js/level-data-service.js b/js/level-data-service.js
index 95bd9fd..751d5f0 100644
--- a/js/level-data-service.js
+++ b/js/level-data-service.js
@@ -55,7 +55,7 @@ var basicCards = {
 var mathCards = {
     'zero': {
         'arabic': '0',
-        'roman': 'nulla',
+        'roman': ' ',
         'math': '1-1',
         'japanese': '〇'
     },
diff --git a/js/pexeso-controller.js b/js/pexeso-controller.js
index d697930..8e555a4 100644
--- a/js/pexeso-controller.js
+++ b/js/pexeso-controller.js
@@ -332,9 +332,16 @@ angular.module('app', ['angular-flippy', 'level-selector', 'level-complete'])
      */
     $scope.computeCardSize = function(cardsPerRow) {
         var cardSize = Math.floor(Math.min(window.innerWidth, window.innerHeight) / cardsPerRow) - 20;
+        
+        var fontSize = Math.floor(cardSize * 0.6);
+        if (fontSize < 12) {
+            fontSize = 12;
+        }
+        
         $scope.cardStyle = {
             width: cardSize + "px",
-            height: cardSize + "px"
+            height: cardSize + "px",
+            "font-size": fontSize + "px"
         };
         
         var paddingLeft = Math.floor((window.innerWidth - (cardSize + 10) * cardsPerRow) / 2);