Linux command to make all foundation 4 css buttons rounded radius buttons (recursive from current directory find and replace with sed via linux command line)

find . -type f -print0 | xargs -0 sed -i 's/"button/"radius button/g' && find . -type f -print0 | xargs -0 sed -i 's/button"/radius button"/g' && find . -type f -print0 | xargs -0 sed -i 's/ button / radius button /g'