csstricks display flex code example
Example 1: flex: syntex
flex: none /* value 'none' case */
flex: <'flex-grow'> /* One value syntax, variation 1 */
flex: <'flex-basis'> /* One value syntax, variation 2 */
flex: <'flex-grow'> <'flex-basis'> /* Two values syntax, variation 1 */
flex: <'flex-grow'> <'flex-shrink'> /* Two values syntax, variation 2 */
flex: <'flex-grow'> <'flex-shrink'> <'flex-basis'> /* Three values syntax */
flex: inherit
Example 2: flex parameters
flex: none | [ <'flex-grow'> <'flex-shrink'>? || <'flex-basis'> ]