elevation method
      
Widget
elevation(
    
- double elevation, {
- Key? key,
- BorderRadiusGeometry borderRadius = BorderRadius.zero,
- Color shadowColor = const Color(0xFF000000),
阴影
Implementation
Widget elevation(
  double elevation, {
  Key? key,
  BorderRadiusGeometry borderRadius = BorderRadius.zero,
  Color shadowColor = const Color(0xFF000000),
}) =>
    Material(
      key: key,
      color: Colors.transparent,
      elevation: elevation,
      borderRadius: borderRadius,
      shadowColor: shadowColor,
      child: this,
    );