fix bug for centering the nav buttons

java/com.sap.sailing.www/main.css

@@ -51,18 +51,20 @@ body {
 	margin: 15px 0 0 0;
 }
 
-.chooseModule {
+.chooseModule, .table {
   margin: 0 auto;
-  width: 580px;
+  display: table;
   margin-top: 600px;
 }
 
 .chooseModule ul {
   list-style: none;
+	min-width: 545px;
 }
 
 .chooseModule ul li {
-  float: left;
+  /*float: left;*/
+  display: inline;
   margin: 0 10px 0 0;
 }