align-content

Aligns a flex container's lines within it when there is extra space in the cross axis, similar to how justify-content aligns individual items within the main axis.

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

/* Usage Example */
.container {
  display: flex;
  flex-wrap: wrap;
  height: 600px;
  align-content: space-between;
  /* distributes multiple rows throughout the height */
}

/* Syntax */
align-content: normal;

/* Global values */
align-content: inherit;
align-content: initial;
align-content: revert;
align-content: revert-layer;
align-content: 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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