fix main demo shell loading mobile view

demo-shell-ng2/app/css/app.css

@@ -1,4 +1,8 @@
 /* Utils */
+body, html {
+    height: 100%;
+}
+
 
 .p-10 {
     padding: 10px;
@@ -7,3 +11,27 @@
 .m-10 {
     margin: 10px;
 }
+
+.loader-container {
+    display: -webkit-box;      /* OLD - iOS 6-, Safari 3.1-6 */
+    display: -moz-box;         /* OLD - Firefox 19- (buggy but mostly works) */
+    display: -webkit-flex;     /* NEW - Chrome */
+    display: flex;             /* NEW, Spec - Opera 12.1, Firefox 20+ */
+    -webkit-box-flex-direction: row;
+    -moz-box-flex-direction: row;
+    -webkit-flex-direction: row;
+    flex-direction: row;
+    height:100%;
+}
+
+.loader-item {
+    margin: auto;
+    max-height:100px;
+    max-width:300px;
+}
+
+.loader-text{
+    white-space: nowrap;
+    text-align: center;
+    position: relative;
+}