diff --git a/app/__init__.py b/app/__init__.py
index 644f7bf..d6d070b 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -1,6 +1,7 @@
 import platform
-from tkinter import *
 from tkinter import ttk
+from customtkinter import *
+from CTkMenuBar import *
 from typing import List
 
 from app.utils_drive import *
@@ -15,9 +16,12 @@ class App:
     drive_tree = None
 
     def __init__(self):
+        set_default_color_theme("dark-blue")
+        set_appearance_mode("dark")
+        
         self.OS_TYPE = platform.system()
 
-        self.root = Tk()
+        self.root = CTk()
         self.root.title("Disk Eraser")
         self.root.geometry("700x300")
         self.root.minsize(700, 300)
@@ -27,33 +31,36 @@ class App:
         self.root.mainloop()
 
     def __load_menus(self):
-        main_menu = Menu()
-
-        help_menu = Menu(tearoff=0)
-        help_menu.add_command(label="Содержание")
-        help_menu.add_separator()
-        help_menu.add_command(label="О программе")
-
-        main_menu.add_cascade(label="Справка", menu=help_menu)
+        bg_color = self.root._apply_appearance_mode(ThemeManager.theme["CTkFrame"]["fg_color"])
+        
+        main_menu = CTkMenuBar(self.root, bg_color=bg_color)
+         
+        help_menu = main_menu.add_cascade("Справка")
+        
+        dropdown1 = CustomDropdownMenu(widget=help_menu)
+        dropdown1.add_option(option="Содержание")
+        dropdown1.add_separator()
+        dropdown1.add_option(option="О программе")
+        
         self.root.config(menu=main_menu)
         
-        self.bottom_frame = ttk.Frame(borderwidth=1, relief=SOLID, padding=[3, 5])
+        self.bottom_frame = CTkFrame(self.root, height=10000)
         
-        self.erase_button = ttk.Button(
+        self.erase_button = CTkButton(
             self.bottom_frame, text="Стереть диск", command=self.__erase_drive)
         self.erase_button.pack(side=RIGHT)
 
-        update_button = ttk.Button(
+        update_button = CTkButton(
             self.bottom_frame, text="Обновить", command=self.__update_drives)
         update_button.pack(side=RIGHT, padx=5)
 
-        self.method_box = ttk.Combobox(master=self.bottom_frame, values=list(erasing_methods.keys()), state="readonly")
+        self.method_box = CTkComboBox(master=self.bottom_frame, values=list(erasing_methods.keys()), state="readonly")
         self.method_box.pack(side=RIGHT, padx=6)
         
-        method_label = ttk.Label(master=self.bottom_frame, text="Метод: ")
+        method_label = CTkLabel(master=self.bottom_frame, text="Метод: ")
         method_label.pack(padx=5, side=RIGHT)
                 
-        self.bottom_frame.pack(side=BOTTOM, fill=X)
+        self.bottom_frame.pack(side=BOTTOM, fill=BOTH, padx=5, pady=5)
 
     def __update_drives(self):
         self.drive_tree.delete(*self.drive_tree.get_children())
@@ -84,6 +91,19 @@ class App:
 
     def __init_table(self):
 
+        ###Treeview Customisation (theme colors are selected)
+        bg_color = self.root._apply_appearance_mode(ThemeManager.theme["CTkFrame"]["fg_color"])
+        text_color = self.root._apply_appearance_mode(ThemeManager.theme["CTkLabel"]["text_color"])
+        selected_color = self.root._apply_appearance_mode(ThemeManager.theme["CTkButton"]["fg_color"])
+
+        treestyle = ttk.Style()
+        treestyle.theme_use()
+        treestyle.configure("Treeview", background=bg_color, foreground=text_color, fieldbackground=bg_color, borderwidth=0)
+        treestyle.map('Treeview', background=[('selected', bg_color)], foreground=[('selected', selected_color)])
+        treestyle.configure("Treeview.Heading", background=bg_color, foreground=text_color, fieldbackground=bg_color, borderwidth=0)
+        treestyle.map('Treeview.Heading', background=[('selected', bg_color)], foreground=[('selected', selected_color)])
+        self.root.bind("<<TreeviewSelect>>", lambda event: self.root.focus_set())
+        
         # определяем столбцы
         columns = ("index", "name", "type", "capacity", "serial_num")
         self.drive_tree = ttk.Treeview(
@@ -121,7 +141,7 @@ class App:
         if self.selected is not None:
             self.erase_button.configure(state='disabled')
             thread = None
-            self.progressbar =  ttk.Progressbar(master=self.bottom_frame, orient="horizontal", length=250)
+            self.progressbar = CTkProgressBar(master=self.bottom_frame, orientation="horizontal", width=250)
             self.progressbar.pack(side=LEFT, padx=6, pady=6)
             for drive in self.drives:
                 if drive.index == self.selected[0]:
diff --git a/app/utils_drive.py b/app/utils_drive.py
index e78d7d2..fc739a5 100644
--- a/app/utils_drive.py
+++ b/app/utils_drive.py
@@ -53,26 +53,15 @@ class Drive():
         self.index = index
 
     def erase(self, method, progress=0) -> Thread:
-        if method == "2 прохода":
-            method_ = self.__erasing_2
-        elif method == "Случайные данные":
-            method = self.__erasing_random
-        t = Thread(target=method_, args=(progress,))
+        t = Thread(target=self.__erasing, args=(progress,))
         t.start()
         return t
 
-    def __erasing_2(self, progress):
+    def __erasing(self, progress):
         len_write = 0
+        write_size = self.block_size*256
         with open(self.path, "wb") as drive:
             while len_write < self.capacity:
                 # drive.write(b"\x00"*self.block_size)
-                len_write += self.block_size*64
-                progress["value"] = int(len_write/self.capacity * 100)
-
-    def __erasing_2(self, progress):
-        len_write = 0
-        with open(self.path, "wb") as drive:
-            while len_write < self.capacity:
-                # drive.write(b"\x00"*self.block_size)
-                len_write += self.block_size*64
-                progress["value"] = int(len_write/self.capacity * 100)
+                len_write += write_size
+                progress.set(len_write/self.capacity)