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masonry-auto-flow

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The masonry-auto-flow CSS property modifies how items are placed when using masonry in CSS Grid Layout.

Syntax

/* Keyword values */
masonry-auto-flow: pack;
masonry-auto-flow: next;
masonry-auto-flow: ordered;
masonry-auto-flow: definite-first;
masonry-auto-flow: next ordered;

/* Global values */
masonry-auto-flow: inherit;
masonry-auto-flow: initial;
masonry-auto-flow: revert;
masonry-auto-flow: revert-layer;
masonry-auto-flow: unset;

This property may take one of two forms:

A single keyword: one of pack, next, definite-first, or ordered
Two keywords, for example next ordered.

Values

pack: As per the default masonry algorithm, items will be placed into the track with the most room.
next: Items will be placed one after the other in the grid axis.
definite-first: Display as in the default masonry algorithm, placing items with a definite place first before placing other masonry items.
ordered: Ignore any items with a definite placement, and place everything according to order-modified document order.

Formal definition

Initial value	`pack`
Applies to	Grid containers with masonry layout
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

masonry-auto-flow = 
  [ pack | next ]               ||
  [ definite-first | ordered ]

Examples

Using the next keyword

HTML

<div id="grid">
  <div id="item1"></div>
  <div id="item2"></div>
  <div id="item3"></div>
  <div id="item4"></div>
  <div id="item5"></div>
</div>
<select id="flow">
  <option value="pack">pack</option>
  <option value="next">next</option>
</select>

CSS

#grid {
  height: 200px;
  width: 200px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: masonry;
  masonry-auto-flow: pack;
}

#item1 {
  background-color: lime;
  height: 2em;
}

#item2 {
  background-color: yellow;
}

#item3 {
  background-color: blue;
  height: 3em;
}

#item4 {
  background-color: red;
  height: 2.5em;
}

#item5 {
  background-color: aqua;
  height: 4em;
}

const selectElem = document.querySelector("select");

function changeMasonryFlow() {
  const grid = document.getElementById("grid");
  const direction = document.getElementById("flow");
  const masonryAutoFlow = direction.value === "pack" ? "pack" : "next";

  grid.style.masonryAutoFlow = masonryAutoFlow;
}

selectElem.addEventListener("change", changeMasonryFlow);

Result

Specifications

Specification
CSS Grid Layout Module Level 3 # masonry-auto-flow

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`masonry-auto-flow`	No	No	No	No	No	No	No	No	No	No	No	No