using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace gyakorlas1
{
    class Program
    {
        static void Main(string[] args)
        {
            //Zöld háttér
            Console.BackgroundColor = ConsoleColor.DarkGreen;
            Console.Clear();
            //Kirajzoljuk a keretet
            Console.ForegroundColor = ConsoleColor.Gray;
            Console.Write('╔');
            for (int i = 1; i < Console.WindowWidth; i++)
            {
                Console.SetCursorPosition(i, 0);
                Console.Write('═');
            }
            Console.SetCursorPosition(Console.WindowWidth-1, 0);
            Console.Write('╗');
            for (int i = 1; i < Console.WindowHeight; i++)
            {
                Console.SetCursorPosition(0, i);
                Console.Write('║');
            }
            Console.SetCursorPosition(0, Console.WindowHeight - 1);
            Console.Write('╚');
            for (int i = 1; i < Console.WindowWidth; i++)
            {
                Console.SetCursorPosition(i, Console.WindowHeight - 1);
                Console.Write('═');
            }
            for (int i = 1; i < Console.WindowHeight; i++)
            {
                Console.SetCursorPosition(Console.WindowWidth-1,i);
                Console.Write('║');
            }
            Console.SetCursorPosition(Console.WindowWidth - 1, Console.WindowHeight - 1);
            Console.Write('╝');




            Console.ReadKey();
        }
    }
}