$ git push -u origin design
Username for 'https://github.com': maxbrprojetos
To https://github.com/maxbrprojetos/curso-git.git
! [rejected] design -> design (non-fast-forward)
error: failed to push some refs to 'https://github.com/maxbrprojetos/curso-git.git'
hint: Updates were rejected because a pushed branch tip is behind its remote
hint: counterpart. Check out this branch and integrate the remote changes
hint: (e.g. 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.