CSS flex-basis Property

Set the initial length of the second flex-item to 100 pixels:

div:nth-of-type(2) {
-webkit-flex-basis: 100px; /* Safari 6.1+ */
flex-basis: 100px;

Try it Yourself »

Definition and Usage

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

Note: If the element is not a flexible item, the flex-basis property has no effect.

Default value: auto
Inherited: no
Animatable: yes. Read about animatable – Try it
Version: CSS3
JavaScript syntax: object.style.flexBasis=”200px” Try it
CSS Syntax
flex-basis: number|auto|initial|inherit;
Property Values
Value Description
number A length unit, or percentage, specifying the initial length of the flexible item(s)
auto Default value. The length is equal to the length of the flexible item. If the item has no length specified, the length will be according to its content
initial Sets this property to its default value. Read about initial
inherit Inherits this property from its parent element. Read about inherit