pubspec.yaml

flutter:
  assets:
    - assets/

main.dart

import 'package:flutter/material.dart';
import 'package:glas/widget/glas_morphism_tile.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Tikkosoft GlassMorphism',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: GlassMorphismTile(),
    );
  }
}

glas_morphism_tile.dart

import 'dart:ui';
import 'package:flutter/material.dart';

class GlassMorphismTile extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        decoration: BoxDecoration(
          image: DecorationImage(
            image: AssetImage("assets/bg.jpg"),
            fit: BoxFit.cover,
          ),
        ),
        child: Center(
          child: Container(
            decoration: BoxDecoration(boxShadow: [
              BoxShadow(
                blurRadius: 24,
                spreadRadius: 16,
                color: Colors.black.withOpacity(0.2),
              )
            ]),
            child: ClipRRect(
              borderRadius: BorderRadius.circular(16.0),
              child: BackdropFilter(
                filter: ImageFilter.blur(
                  sigmaX: 10.0,
                  sigmaY: 10.0,
                ),
                child: Container(
                  height: 200,
                  width: 400,
                  decoration: BoxDecoration(
                      color: Colors.white.withOpacity(0.2),
                      borderRadius: BorderRadius.circular(16.0),
                      border: Border.all(
                        width: 1.5,
                        color: Colors.white.withOpacity(0.2),
                      )),
                  child: Center(
                    child: Text(
                      "TIKKOSOFT",
                      style: TextStyle(
                        fontSize: 28,
                        fontWeight: FontWeight.bold,
                        color: Colors.black.withOpacity(0.5),
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}