title: How to change position of Container inside Stack?
body: <p>Im trying to displaying a button inside my stack but it not getting the correct position.  The button is the reply  Button . I added a foot how it looks at the moment you can check it what I want is displaying it on the right side of the window at the bottom with a bit of spacing between bottom and the button.
  Hope anyone can help. if you need more information please leave a comment .</p>
  <pre><code>  @override
    Widget build(BuildContext context) {
      var size = MediaQuery.of(context).size;
      try {
        return Scaffold(
          body: StreamBuilder(
              stream: mystreamofallvideos,
              builder: (context, snapshot) {
                if (snapshot.hasData &amp;&amp;
                    snapshot.connectionState != ConnectionState.waiting) {
                  return PageView.builder(
                      itemCount: snapshot.data.docs.length,
                      controller:
                          PageController(initialPage: 0, viewportFraction: 1),
                      scrollDirection: Axis.vertical,
                      itemBuilder: (context, index) {
                        DocumentSnapshot videos = snapshot.data.docs[index];
  
                        return Stack(children: [
                          Videoplayeritem(widget.videoid),
  
                          Column(children: [
                            Align(
                              alignment: Alignment.bottomLeft,
                              child: Container(
                                height: 100,
                                child: Row(
                                  crossAxisAlignment: CrossAxisAlignment.center,
                                  mainAxisSize: MainAxisSize.max,
                                  children: [
                                    IconButton(
                                        icon: Icon(
                                          Icons.close,
                                          color: Colors.white,
                                          size: 35,
                                        ),
                                        onPressed: () {
                                          Navigator.of(context).pop();
                                        }),
                                    SizedBox(
                                      width: 190,
                                    ),
                                  ],
                                ),
                              ),
                            ),
                            Container(
                              color: Colors.red,
                              width: 210,
                              height: 94,
                              //color: Colors.blue.withOpacity(0.5),
  
                              child: InkWell(
                                onTap: () =&gt; sharevideo(
                                    widget.videoid, videos.data()['id']),
                                child: Icon(Icons.reply,
                                    size: 55, color: Colors.white),
                              ),
                            ),
                          ]),
  
                          //starssonthe right
                        ]);
                      });
                } else {
                  return Center(child: CircularProgressIndicator());
                }
              }),
        );
      } catch (e) {
        e.toString();
      }
    }
  }
  
  </code></pre>
  <p>This is how it looks</p>
  <p><a href="https://i.stack.imgur.com/V4J78.png" rel="nofollow noreferrer">enter image description here</a></p>