Improve mobile camera shown (#1354)

- Add new store to send mobile size
 - Update style to show video for mobile size

front/style/mobile-style.scss

@@ -28,8 +28,8 @@
     height: 80%;
 
     &> div {
-      max-height: 120px;
       min-width: 200px;
+      max-height: 21vh;
     }
 
     .video-container{

front/style/style.scss

@@ -47,6 +47,11 @@ body .message-info.warning{
         height: 100%;
         max-height: 90vh;
         cursor: url('./images/cursor_pointer.png'), pointer;
+
+        &.mobile{
+            width: 100%;
+            height: 21vh;
+        }
     }
 
     i {