????? ??????????? ??????????, ????? ??????, ????, ???? ????? ??? ?????????? ????? ???? ?????????? ??? ??????????. ??? ??????? ?????? ??????????, ??????? ????????? ???? ????????? ????? ?????? ???????????. ???? ????? ?????????? ???? ??????? ????? ??????????? ???? ???????? ?????????? ????? ?????????? ????????? ????? ????????????? ???? ?????????:

??? ??????? ?????? ??????????, ??????? ????????? ????? ???? ????????? ????????? ?????? ????? ???????: ???? ?????? ???? ?????????, ????????????? ???? ????, ????? ??????? ???? ?????????, ??????? ???? ?????????? ???? ????? ???? ?????????, ?????????? ???????????? ??????? ???? ????? ???? ????, ???? ???????? ????? ????????? ???????? ?????? ???? ?????? ????????.

???? ?? background ??? ?????? ???? ?????????:

???????? ???? ???? ?????? ???? ???? ??????, ?? background ??? ?????? ???? ????????????? ?????? ???????:

1. ???? ????????? ??????????? ????, ????????? ???? ????? ??? ????? ????????? ??????????? ????, ??? ?????? ???????? ???????;

2. ???? ?????????? ???????? ????? ?????????? ??????, ?????????? ??? ??????? ?????? ????;

3. ???? ???? ????? ???? ??? ???? ?????? ???? ???? ???? ???????.

?????? ????:

???? ?????? ????? ?? bottom ??? ??????? ???, ??????????? ???? ????????????? ?????? ??????? ??????? ?????? ???????:

1. ???? ????? ????? ????? ???????????;

2. ???? ???????? ????????? ???????;

3. ???? ?????????? ????? ?????????, ???? ??????? ????? ????? ??????? ????? ????????? ?????????, ????? ???????.

????? ??????? ????? ???? ?????????:

????? ??????? ????? ???? ????????? ????????? ????????:

1. ?????????? ???????, ????, ??? ???????, ???????, ????? ?????? ?????? ??? ?????? ???? ????????? ??? ???????? ????? ????? ???????? ???? ???????;

2. ???????? ???? ????? ???????? ???? ??????? ????? ?????? ?????????? ??????????? ????? ????????? ????? ???? ?????????? ???? ????? ???????? ???????????.

???? ????????????? ????????????? ???? ??????? ????????????, ?????? ????? ???? ?????????? ?????????? ?????????? ???? ??????? ??????????? ????.

??? ??????????? ????? ???? ?????????? ???? ?????????, ???? ???? ????? ??????? ???? ?????????????.???? ???? ????? ??????????? ????????? - ?????? ?????????, ??????????????? ???????!