improve the congratulations text

index.html

@@ -62,7 +62,8 @@
   <div id="installed">
     <div class="installWrapper">
       <div class="c3">
-        <strong>Congrats!</strong> Hit the &nbsp;<img src="i/f1Icon.png"> button
+        <strong style="display:block;">Congratulations on installing F1!</strong>
+          Hit the &nbsp;<img src="i/f1Icon.png"> button
       </div>
     </div>
     <div id="shareArrow">

style.css

@@ -97,6 +97,7 @@ strong {
   width: 720px;
   margin: 0 auto;
   overflow: hidden;
+  text-align: center;
 }
 
 #installed img {