Put post create form into a card

lib/ui/widgets/post_create_form_widget.dart

@@ -8,6 +8,7 @@ import 'package:comunic/models/new_post.dart';
 import 'package:comunic/ui/dialogs/input_url_dialog.dart';
 import 'package:comunic/ui/dialogs/input_youtube_link_dialog.dart';
 import 'package:comunic/ui/dialogs/new_survey_dialog.dart';
+import 'package:comunic/ui/widgets/post_container_widget.dart';
 import 'package:comunic/utils/files_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/post_utils.dart';
@@ -99,7 +100,9 @@ class _PostCreateFormWidgetState extends State<PostCreateFormWidget> {
 
   @override
   Widget build(BuildContext context) {
-    return Column(
+    return PostContainer(
+      child: Card(
+        child: Column(
           children: <Widget>[
             // Post text content
             Padding(
@@ -108,7 +111,8 @@ class _PostCreateFormWidgetState extends State<PostCreateFormWidget> {
                 controller: _postTextController,
                 minLines: 3,
                 maxLines: 10,
-            decoration: InputDecoration(hintText: tr("Create a new post...")),
+                decoration:
+                    InputDecoration(hintText: tr("Create a new post...")),
                 onChanged: (s) => setState(() {}),
               ),
             ),
@@ -201,6 +205,8 @@ class _PostCreateFormWidgetState extends State<PostCreateFormWidget> {
               ),
             )
           ],
+        ),
+      ),
     );
   }
 
@@ -338,7 +344,6 @@ class _PostCreateFormWidgetState extends State<PostCreateFormWidget> {
 
   /// Pick a new YouTube video
   Future<void> _pickYouTubeVideo() async {
-
     final youtubeID = await showInputYouTubeIDDialog(context, _youtubeID);
 
     if (youtubeID == null) return;
@@ -347,7 +352,6 @@ class _PostCreateFormWidgetState extends State<PostCreateFormWidget> {
     setState(() {
       _youtubeID = youtubeID;
     });
-
   }
 
   /// Submit new post