Tailwind css class not generate

How i apply the tailwind class css ?
for example :

css 
text-xs text-white rotate-3 bg-danger-100 text-danger-800 text-sm font-medium mr-2 px-2.5 py-0.5 rounded dark:bg-danger-900 dark:text-danger-300

css 
text-xs text-white rotate-3 bg-danger-100 text-danger-800 text-sm font-medium mr-2 px-2.5 py-0.5 rounded dark:bg-danger-900 dark:text-danger-300