flex-direction

Determines the orientation of flex items in a container, essentially choosing whether they form a horizontal row or a vertical column.

It is documented as part of the CSS Flexible Box Layout specification.

/* Usage Example */
.container {
  display: flex;
  flex-direction: column;
  /* stacks items vertically */
}

/* Syntax */
flex-direction: row;
flex-direction: row-reverse;
flex-direction: column;
flex-direction: column-reverse;

/* Global values */
flex-direction: inherit;
flex-direction: initial;
flex-direction: revert;
flex-direction: revert-layer;
flex-direction: unset;
Widely available Since 2015 96% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.

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