inline_btn_1 = InlineKeyboardButton('Регистрация', callback_data='registration')
inline_btn_2 = InlineKeyboardButton('Авторизация', callback_data='auth')
inline_btn_3 = InlineKeyboardButton('Перейти на сайт', url="https://loplop.ru/home")
inline_kb1 = InlineKeyboardMarkup().add(inline_btn_1,inline_btn_2,inline_btn_3)

@dp.message_handler(state='*', commands=["start"])
@dp.message_handler(Text(equals=['начать'], ignore_case=True), state='*')
async def send_welcome(message):
   await message.answer("это типа меню", reply_markup=inline_kb1)

@dp.message_handler(state='*', commands='cancel')
@dp.message_handler(Text(equals='отмена', ignore_case=True), state='*')
async def cancel_handler(message: types.Message, state: FSMContext):
    current_state = await state.get_state()
    if current_state is None:
        return
    await state.finish()
    await bot.send_message(message.chat.id, 'Отмена регистрации.', reply_markup=types.ReplyKeyboardRemove())

###################################### регистрация #####################################################
class Form_registration(StatesGroup):
    name = State()
    password = State()
    email = State()
    category = State()


@dp.callback_query_handler(lambda c: c.data == 'registration')
async def send_name(callback_query: types.CallbackQuery):
    await bot.answer_callback_query(callback_query.id)
    await Form_registration.name.set()
    await bot.send_message(callback_query.from_user.id, 'Укажите логин: ')


@dp.message_handler(state=Form_registration.name)
async def send_password(message: types.Message, state: FSMContext):
    async with state.proxy() as data:
        data['name'] = message.text
    await Form_registration.next()
    await message.answer("Укажите пароль: ")