Revert "modify footer"

This reverts commit ba54f7004b77dc101b1c44dd00256f7f4381ee7d.
Revert "Revert "modify footer""

This reverts commit 22a193a885d8aa372db3ca8c0b0ea6af67255e37.
Revert "Revert "Revert "modify footer"""

This reverts commit 780449dd90bb1c4cb19d4142f69a1ad60af9507e.
Revert "modify footer"

This reverts commit 8a5ec1b8f66be2adfa4dc7accfbcf58ffbf5d377.