On branch master
Changes to be committed:
(use "git restore --staged <file>..." to unstage)
On branch master
Changes not staged for commit:
(use "git add <file>..." to update what will be committed)
(use "git restore <file>..." to discard changes in working directory)
modified: background.html
no changes added to commit (use "git add" and/or "git commit -a")
On branch master
nothing to commit, working tree clean
作業繳交