Flex With Flexbox

The flex-basis property specifies the initial length of a flex item

Item 2 has width of 200px. flex-basis: 200px;

Item 1
Item 2
Item 3

All items have initial width of 33% - flex-basis: 33%;

Item 1
Item 2
Item 3

The "Flex" property

The flex property is a shorthand property for the flex-grow, flex-shrink, and flex-basis properties.

Everything default - flex: 0 1 auto;

Item 1
Item 2
Item 3

flex: 1 1 25%

Item 1
Item 2
Item 3