CSS flexbox makes it easier to design flexible and responsive layout structure without using float or positioning.

• Flex container

  • display
  • flex-direction
  • justify-content
  • align-items
  • flex-wrap
  • flex-flow
  • align-content

• Flex Item

  • align-self
  • order
  • flex-grow
  • flex-basis
  • flex-shrink
  • flex

Flex container

This following properties are applied to the flex container.

display

It transforms the container to a flexible one (flexbox) or inline flex container.

• flex: This value will transform the elements of the container to flex items.

flex-direction

It specifies in which direction the main axis go.

• row: it's the default, flex items will be displayed horizontally and the main axis will go from the left to the right side.

• row-reverse: it's the same as row, except the order will be inverted and the main axis will go from the right to the left.

• column: flex items will be displayed as a column (vertically) and the main direction will go from top to bottom.

• column-reverse: it's the same as a column, except the order will be inverted and the main axis will go from bottom to top.

justify-content

It's used to control how the items should be positioned following the main axis.

• center: This value will center all the items.

• space-between: It will distribute the available space evenly between the items.

• space-around: It will give each flex item the same amount of space on both left and right.

• space-evenly: This value ensures that the space between flex items will be the same.

• flex-start: it's the default, the items will be positioned at the start of the flex container.

• flex-end: the items will be positioned at the end of the flex container.

align-items

It's used to control how the items should be positioned along the cross axis.

• stretch: it's the default, the flex items will be stretched along the cross axis.

• center: This value will center the items along the cross axis.

• flex-start: the items will be positioned at the start of the cross axis.

• flex-end: the items will be positioned at the end of the cross axis.

flex-wrap

• wrap: This value will put the overflowing items into new line.

flex-flow

The flex-flow property is a shorthand property for setting both the flex-direction and flex-wrap properties.
e.g: flex-flow: column wrap;

align-content

It does the same job as align-items, except this property aligns the flex container along the cross-axis if extra space is available. Notice that the property will be applied only if the number of flex containers is more than one.

• stretch: it's the default, flex containers stretch to take up the remaining space.

• center: This value will center the flex container along the cross axis.

• flex-start: the flex container will be positioned at the start of the cross axis.

• flex-end: the flex container will be positioned at the end of the cross axis.

• space-between: It will distribute the available space evenly between flex containers.

• space-around: It will give each flex container the same amount of space on both left and right.

Flex Item

This following properties are applied to the flex item.

align-self

The property align-items sets the default alignment for all the flex items, align-self enables us to override this default alignment for an individual item.

• auto: it's the default.
• center: This value will center the flex item towards its container.

• flex-start: the flex item will be positioned at the start of the cross axis.

• flex-end: the flex item will be positioned at the end of the cross axis.

• stretch: the flex item will be stretched along the cross axis.

order

The order property controls the order in which children of a flex container appear within the flex container. The value must be an integer.

e.g: order: -1;

flex-grow

It gives the flex item the ability to grow. The value must be positive.

e.g: flex-grow: 1;

flex-basis

It sets the flex basis, in other words the width.

e.g: flex-basis: 30%;

flex-shrink

It controls how a flex item can shrink.

flex-shrink:0 it will not shrink

flex-shrink:1 it will shrink.

e.g: flex-shrink:0

flex

We can simplify flex-grow, flex-basis flex-shrink with flex followed by them values.

e.g: flex: 0 30% auto