🐛 Fix post item width issue

lib/screens/explore.dart

@@ -261,8 +261,7 @@ class _ExploreScreenState extends State<ExploreScreen> {
               hasReachedMax: _postCount != null && _posts.length >= _postCount!,
               onFetchData: _fetchPosts,
               itemBuilder: (context, idx) {
-                return Center(
-                  child: OpenablePostItem(
+                return OpenablePostItem(
                   data: _posts[idx],
                   maxWidth: 640,
                   onChanged: (data) {
@@ -271,7 +270,6 @@ class _ExploreScreenState extends State<ExploreScreen> {
                   onDeleted: () {
                     _refreshPosts();
                   },
-                  ),
                 );
               },
               separatorBuilder: (_, __) => const Gap(8),

lib/widgets/post/post_item.dart

@@ -69,7 +69,8 @@ class OpenablePostItem extends StatelessWidget {
   Widget build(BuildContext context) {
     final cfg = context.read<ConfigProvider>();
 
-    return OpenContainer(
+    return Center(
+      child: OpenContainer(
         closedBuilder: (_, __) => Container(
           constraints: BoxConstraints(maxWidth: maxWidth ?? double.infinity),
           child: PostItem(
@@ -96,6 +97,7 @@ class OpenablePostItem extends StatelessWidget {
         closedShape: const RoundedRectangleBorder(
           borderRadius: BorderRadius.all(Radius.circular(16)),
         ),
+      ),
     );
   }
 }