title: Flutter, How to remove white spaces around dialog box?
body: <p>I am calling this dialog while getting data from server. This dialog box is having white spaces around it. I can I remove this white space around my dialog box. Here is my code. </p>
  
  <pre><code>var bodyProgress = new Container(
   decoration: new BoxDecoration(
    color: Colors.blue[200],
    borderRadius: new BorderRadius.circular(10.0)
   ),
  width: 300.0,
  height: 200.0,
  //color: Colors.blue,
  alignment: AlignmentDirectional.center,
  child: new Column(
  crossAxisAlignment: CrossAxisAlignment.center,
  mainAxisAlignment: MainAxisAlignment.center,
  children: &lt;Widget&gt;[
    new Center(
      child: new SizedBox(
        height: 50.0,
        width: 50.0,
        child: new CircularProgressIndicator(
          value: null,
          strokeWidth: 7.0,
        ),
      ),
    ),
    new Container(
      margin: const EdgeInsets.only(top: 25.0),
      child: new Center(
        child: new Text(
          "Signing up...",
          style: new TextStyle(
              color: Colors.white
             ),
           ),
         ),
       ),
     ],
    ),
  );
  </code></pre>
  
  <p>Here I am calling this dialog. I've tried with both AlertDialog() and SimpleDialog() having same issue with both. </p>
  
  <pre><code>showDialog(context: context, child: new AlertDialog(
    content: bodyProgress,
  
  ));
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/lzLOs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lzLOs.png" alt="enter image description here"></a></p>