title: Flutter Drawer: Remove empty space
body: <p>I implemented a sticky header in my drawer. But now I got an empty space between header and first ListTile item. 
  How can I remove this space / set the items to the end of the header?</p>
  
  <p>Thanks for your help!
  (I had to remove some ListTiles because it was to much code for stackoverflow)</p>
  
  <pre><code>drawer: Drawer(
    child: Column(
        children: [
          Expanded(
            flex: 1,
            child: Container(
              width: MediaQuery.of(context).size.width * 0.85,
              child: DrawerHeader(
            decoration: BoxDecoration(
            gradient: LinearGradient(
            begin: Alignment.topRight,
            end: Alignment.bottomLeft,
            colors: [Colors.blue, Colors.red])
          ),
          child: Center (child:  Text('Title', style: TextStyle(color: Colors.white, fontWeight: FontWeight.w700, fontSize: 30.0)),),
  
              ),
            ),
          ),
          Expanded(
            flex: 2,
            child: ListView(children: [
             ListTile(
          leading: Icon(Icons.wb_sunny),
          title: Text('Menu 1'),
          trailing: Icon(Icons.keyboard_arrow_right),
          onTap: () {print("Hallo");},
          ),
          Divider(height: 1, thickness: 0.5, color: Colors.grey,),
          ListTile(
          leading: Icon(Icons.wb_sunny),
          title: Text('Menu 2'),
          trailing: Icon(Icons.keyboard_arrow_right),
          onTap: () {print("Hallo");},
          ),
          Divider(height: 1, thickness: 0.5, color: Colors.grey,),
          ListTile(
          leading: Icon(Icons.wb_sunny),
          title: Text('Menu 3'),
          trailing: Icon(Icons.keyboard_arrow_right),
          onTap: () {print("Hallo");},
          ),
          Divider(height: 1, thickness: 0.5, color: Colors.grey,),
            ]),
          )
        ],
      ),
      ),        
  </code></pre>