align-content
Quick Summary for align-content
The CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
Code Usage for align-content
/* Basic positional alignment */ /* align-content does not take left and right values */ align-content: center;     /* Pack items around the center */ align-content: start;      /* Pack items from the start */ align-content: end;        /* Pack items from the end */ align-content: flex-start; /* Pack flex items from the start */ align-content: flex-end;   /* Pack flex items from the end */  /* Normal alignment */ align-content: normal;  /* Baseline alignment */ align-content: baseline; align-content: first baseline; align-content: last baseline;  /* Distributed alignment */ align-content: space-between; /* Distribute items evenly                                  The first item is flush with the start,                                  the last is flush with the end */ align-content: space-around;  /* Distribute items evenly                                  Items have a half-size space                                  on either end */ align-content: space-evenly;  /* Distribute items evenly                                  Items have equal space around them */ align-content: stretch;       /* Distribute items evenly                                  Stretch 'auto'-sized items to fit                                  the container */  /* Overflow alignment */ align-content: safe center; align-content: unsafe center;  /* Global values */ align-content: inherit; align-content: initial; align-content: revert; align-content: unset; 
More Details for align-content

align-content

The CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.

The interactive example below use Grid Layout to demonstrate some of the values of this property.

This property has no effect on single line flex containers (i.e. ones with flex-wrap: nowrap).

Syntax

/* Basic positional alignment */ /* align-content does not take left and right values */ align-content: center;     /* Pack items around the center */ align-content: start;      /* Pack items from the start */ align-content: end;        /* Pack items from the end */ align-content: flex-start; /* Pack flex items from the start */ align-content: flex-end;   /* Pack flex items from the end */  /* Normal alignment */ align-content: normal;  /* Baseline alignment */ align-content: baseline; align-content: first baseline; align-content: last baseline;  /* Distributed alignment */ align-content: space-between; /* Distribute items evenly                                  The first item is flush with the start,                                  the last is flush with the end */ align-content: space-around;  /* Distribute items evenly                                  Items have a half-size space                                  on either end */ align-content: space-evenly;  /* Distribute items evenly                                  Items have equal space around them */ align-content: stretch;       /* Distribute items evenly                                  Stretch 'auto'-sized items to fit                                  the container */  /* Overflow alignment */ align-content: safe center; align-content: unsafe center;  /* Global values */ align-content: inherit; align-content: initial; align-content: revert; align-content: unset; 

Values

start

The items are packed flush to each other against the start edge of the alignment container in the cross axis.

end

The items are packed flush to each other against the end edge of the alignment container in the cross axis.

flex-start

The items are packed flush to each other against the edge of the alignment container depending on the flex container's cross-start side. This only applies to flex layout items. For items that are not children of a flex container, this value is treated like start.

flex-end

The items are packed flush to each other against the edge of the alignment container depending on the flex container's cross-end side. This only applies to flex layout items. For items that are not children of a flex container, this value is treated like end.

center

The items are packed flush to each other in the center of the alignment container along the cross axis.

normal

The items are packed in their default position as if no align-content value was set.

baseline, first baseline, last baseline

Specifies participation in first- or last-baseline alignment: aligns the alignment baseline of the box's first or last baseline set with the corresponding baseline in the shared first or last baseline set of all the boxes in its baseline-sharing group.

The fallback alignment for first baseline is start, the one for last baseline is end.

space-between

The items are evenly distributed within the alignment container along the cross axis. The spacing between each pair of adjacent items is the same. The first item is flush with the start edge of the alignment container in the cross axis, and the last item is flush with the end edge of the alignment container in the cross axis.

space-around

The items are evenly distributed within the alignment container along the cross axis. The spacing between each pair of adjacent items is the same. The empty space before the first and after the last item equals half of the space between each pair of adjacent items.

space-evenly

The items are evenly distributed within the alignment container along the cross axis. The spacing between each pair of adjacent items, the start edge and the first item, and the end edge and the last item, are all exactly the same.

stretch

If the combined size of the items along the cross axis is less than the size of the alignment container, any auto-sized items have their size increased equally (not proportionally), while still respecting the constraints imposed by max-height/max-width (or equivalent functionality), so that the combined size exactly fills the alignment container along the cross axis.

safe

Used alongside an alignment keyword. If the chosen keyword means that the item overflows the alignment container causing data loss, the item is instead aligned as if the alignment mode were start.

unsafe

Used alongside an alignment keyword. Regardless of the relative sizes of the item and alignment container and whether overflow which causes data loss might happen, the given alignment value is honored.

Formal definition

Initial valuenormal
Applies tomulti-line flex containers
Inheritedno
Computed valueas specified
Animation typediscrete

Formal syntax

normal | <baseline-position> | <content-distribution> | <overflow-position>? <content-position>

where <baseline-position> = [ first | last ]? baseline<content-distribution> = space-between | space-around | space-evenly | stretch<overflow-position> = unsafe | safe<content-position> = center | start | end | flex-start | flex-end

Examples

CSS

#container {   height:200px;   width: 240px;   align-content: center; /* Can be changed in the live sample */   background-color: #8c8c8c; }  .flex {   display: flex;   flex-wrap: wrap; }  .grid {   display: grid;   grid-template-columns: repeat(auto-fill, 50px); }  div > div {   box-sizing: border-box;   border: 2px solid #8c8c8c;   width: 50px;   display: flex;   align-items: center;   justify-content: center; }  #item1 {   background-color: #8cffa0;   min-height: 30px; }  #item2 {   background-color: #a0c8ff;   min-height: 50px; }  #item3 {   background-color: #ffa08c;   min-height: 40px; }  #item4 {   background-color: #ffff8c;   min-height: 60px; }  #item5 {   background-color: #ff8cff;   min-height: 70px; }  #item6 {   background-color: #8cffff;   min-height: 50px;   font-size: 30px; }  select {   font-size: 16px; }  .row {   margin-top: 10px; } 

HTML

<div id="container" class="flex">   <div id="item1">1</div>   <div id="item2">2</div>   <div id="item3">3</div>   <div id="item4">4</div>   <div id="item5">5</div>   <div id="item6">6</div> </div>  <div class="row">   <label for="display">display: </label>   <select id="display">     <option value="flex">flex</option>     <option value="grid">grid</option>   </select> </div>  <div class="row">   <label for="values">align-content: </label>   <select id="values">     <option value="normal">normal</option>     <option value="stretch">stretch</option>     <option value="flex-start">flex-start</option>     <option value="flex-end">flex-end</option>     <option value="center" selected>center</option>     <option value="space-between">space-between</option>     <option value="space-around">space-around</option>     <option value="space-evenly">space-evenly</option>      <option value="start">start</option>     <option value="end">end</option>     <option value="left">left</option>     <option value="right">right</option>      <option value="baseline">baseline</option>     <option value="first baseline">first baseline</option>     <option value="last baseline">last baseline</option>      <option value="safe center">safe center</option>     <option value="unsafe center">unsafe center</option>     <option value="safe right">safe right</option>     <option value="unsafe right">unsafe right</option>     <option value="safe end">safe end</option>     <option value="unsafe end">unsafe end</option>     <option value="safe flex-end">safe flex-end</option>     <option value="unsafe flex-end">unsafe flex-end</option>   </select> </div> 

Result

Specifications

Specification
CSS Box Alignment Module Level 3 # align-justify-content
CSS Flexible Box Layout Module Level 1 # align-content-property

See also

CSS Flexbox Guide: Basic Concepts of Flexbox CSS Flexbox Guide: Aligning items in a flex container CSS Grid Guide: Box alignment in CSS Grid layouts CSS Box Alignment

Last modified: Sep 15, 2021, by MDN contributors

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