如何减少checkboxListTile之间的间距

ListView.separated(
  itemCount: checkboxList.length,
  separatorBuilder: (context, index) => SizedBox(height: 5), // 设置间距为5
  itemBuilder: (context, index) => checkboxList[index],
),

CheckboxListTile(
  title: Container(
    margin: EdgeInsets.only(bottom: 5), // 设置底部间距为5
    child: Text('Checkbox 1'),
  ),
  subtitle: Container(
    margin: EdgeInsets.only(top: 5), // 设置顶部间距为5
    child: Text('Subtitle'),
  ),
  trailing: Icon(Icons.check),
  value: true,
  onChanged: (newValue) {},
),

Column(
  children: [
    Padding(
      padding: EdgeInsets.only(bottom: 5), // 设置底部间距为5
      child: checkboxListTile1,
    ),
    Padding(
      padding: EdgeInsets.only(top: 5), // 设置顶部间距为5
      child: checkboxListTile2,
    ),
    // 其他checkboxListTile
  ],
),