What does flex: 25% mean in CSS?

Answer 1

flex is the shorthand for flex-grow flex-shrink and flex-basis so flex: 25% is the same as:

element {

flex-grow: 1; /* default 1*/

flex-shrink: 1; /* default 1*/

flex-basis: 25%;

}

https://css-tricks.com/almanac/properties/f/flex-basis/

https://css-tricks.com/snippets/css/a-guide-to-flexbox/

flex-basis

This defines the default size of an element before the remaining space is distributed.