Flutter Table Calendar — Custom

There is a flutter package called table Calendar https://pub.dev/packages/table_calendar which gives full fledged calendar feature.

but to make it look custom below is the code

import 'package:flutter/material.dart';
import 'package:habit_saber/pages/widgets/marker.dart';
import 'package:table_calendar/table_calendar.dart';
class Calendar extends StatefulWidget {
  const Calendar({Key? key}) : super(key: key);
@override
  State<Calendar> createState() => _CalendarState();
}
class _CalendarState extends State<Calendar> {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: TableCalendar(
        firstDay: DateTime.utc(2010, 10, 16),
        lastDay: DateTime.utc(2030, 3, 14),
        focusedDay: DateTime.now(),
        calendarBuilders: CalendarBuilders(
          defaultBuilder: (context, day, focusedDay) {
            return Marker();
          },
          todayBuilder: (context, day, focusedDay) {
            return Marker();
          },
        ),
      ),
    );
  }
}