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flexbox-classes.html
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flexbox-classes.html
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<html>
<head>
<style>
/* Flexbox helpers */
.hbox,
.vbox {
display: flex;
}
.hbox {
flex-direction: row;
}
.vbox {
flex-direction: column;
}
.hbox.reverse {
flex-direction: row-reverse;
}
.vbox.reverse {
flex-direction: column-reverse;
}
.hbox.inline,
.vbox.inline {
display: inline-flex;
}
.hbox.wrap,
.vbox.wrap {
flex-wrap: wrap;
}
.hbox.wrap-reverse,
.vbox.wrap-reverse {
flex-wrap: wrap-reverse;
}
/* Flexbox alignment */
.hbox.halign-items-start,
.vbox.valign-items-start {
justify-content: flex-start;
}
.hbox.halign-items-center,
.vbox.valign-items-center {
justify-content: center;
}
.hbox.halign-items-end,
.vbox.valign-items-end {
justify-content: flex-end;
}
/* Alignment in cross-axis. */
.hbox.valign-items-start,
.vbox.halign-items-start {
align-items: flex-start;
}
.hbox.valign-items-center,
.vbox.halign-items-center {
align-items: center;
}
.hbox.valign-items-end,
.vbox.halign-items-end {
align-items: flex-end;
}
/* Self/item alignment. */
.hbox > .valign-start,
.vbox > .halign-start,
.hbox.valign-items-start > *,
.vbox.halign-items-start > * {
align-self: flex-start;
}
.hbox > .valign-center,
.vbox > .halign-center,
.hbox.valign-items-center > *,
.vbox.halign-items-center > * {
align-self: center;
}
.hbox > .valign-end,
.vbox > .halign-end,
.hbox.valign-items-end > *,
.vbox.halign-items-end > * {
align-self: flex-end;
}
/* Stretch "alignment" */
.hbox > .hgrow, /* obsolete - use .halign-stretch */
.hbox > .halign-stretch,
.vbox > .valign-stretch,
.hbox.halign-items-stretch > *,
.vbox.valign-items-stretch > * {
flex-grow: 1;
}
.hbox > .halign-stretch-2,
.vbox > .valign-stretch-2 {
flex-grow: 2;
}
.hbox > .halign-stretch-3,
.vbox > .valign-stretch-3 {
flex-grow: 3;
}
.hbox.valign-items-stretch,
.vbox.halign-items-stretch {
align-items: stretch;
}
.hbox > .valign-stretch,
.vbox > .halign-stretch,
.hbox.valign-items-stretch > *,
.vbox.halign-items-stretch > * {
align-self: stretch;
}
/* Space distribution */
.hbox.halign-items-space-around,
.vbox.valign-items-space-around {
justify-content: space-around;
}
.hbox.valign-items-space-around,
.vbox.halign-items-space-around {
align-content: space-around;
}
.hbox.halign-items-space-between,
.vbox.valign-items-space-between {
justify-content: space-between;
}
.hbox.valign-items-space-between,
.vbox.halign-items-space-between {
align-content: space-between;
}
.hbox.halign-items-space-evenly,
.vbox.valign-items-space-evenly {
justify-content: space-evenly;
}
.hbox.valign-items-space-evenly,
.vbox.halign-items-space-evenly {
align-content: space-evenly;
}
.hbox > .spacer,
.hbox > .spacer-1,
.vbox > .spacer,
.vbox > .spacer-1 {
flex-grow: 1;
visibility: hidden;
}
.hbox > .spacer-2,
.vbox > .spacer-2 {
flex-grow: 2;
visibility: hidden;
}
.hbox > .spacer-3,
.vbox > .spacer-3 {
flex-grow: 3;
visibility: hidden;
}
`;
</style>
<style>
.general {
width: 100%;
}
.general>div {
background-color: #ccc;
padding: 4px;
margin: 12px;
}
body {
font-family: 'Roboto', 'Noto', sans-serif;
font-size: 14px;
margin: 0;
padding: 24px;
background-color: #fafafa;
}
.centered {
max-width: 600px;
margin-left: auto;
margin-right: auto;
}
.container {
position: relative;
border: 1px solid #000;
background-color: #ccc;
padding: 0;
margin: 0;
}
.container div {
border: 1px solid #000;
border-radius: 3px;
padding: 5px;
margin: 0;
background-color: white;
min-height: 20px;
}
/* container with a label should add margin-top to the container */
.container:has(label) {
margin-top: 2.5em;
}
.container label {
position: absolute;
left: 1em;
top: -2em;
background: white;
border: 2px solid lightgray;
border-radius: 4px;
padding: 2px 4px;
white-space: nowrap;
overflow: visible;
box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 3px 1px -2px rgba(0, 0, 0, 0.12), 0 1px 5px
}
/* Make spacers in containers slightly visible with a mostly transparent background pattern. */
.container>.spacer,
.container>.spacer-1,
.container>.spacer-2,
.container>.spacer-3 {
visibility: visible;
opacity: .4;
background: repeating-linear-gradient(45deg, #eee, #eee 5px, #fff 5px, #fff 10px);
}
</style>
</head>
<body>
Derived from: <a href="https://npm-demos.appspot.com/@polymer/[email protected]/demo/index.html">
https://npm-demos.appspot.com/@polymer/[email protected]/demo/index.html
</a>
<h1>Flexbox classes</h1>
<h2>General principals</h2>
<p>
This document defines classes that are used to create flexbox layouts based on the <a href="https://www.w3.org/TR/css-flexbox-1/">CSS Flexible Box Layout Module</a> specification. The classes defined here are designed to be used in combination to create a wide variety of layouts with no additional CSS required in most cases.
</p>
<p>
The term "container" in the flexbox specification refers to an element that contains other elements, and
the children elements of a container are referred to here as "items". An item can itself be a container of items.
</p>
<p>Two container classes are defined here, "hbox" and "vbox". Variations of the container classes are also provided, which can be added as separate classes. For example, the <code>hbox</code> class can be combined with <code>halign-items-center</code> to create a horizontal container with items aligned to the center of the available width of the container.</p>
<h4>Horizontal or Vertical Orientation</h4>
<p>
Container elements can be horizontal or vertical in orientation as determined by the class <code>hbox</code> or <code>vbox</code>, meaning the children of these containers will be arranged in rows or columns, respectively.
</p>
<p>
Note that the container in the following examples often have a larger than required fixed height to allow the items to expand vertically to fill the available space.
</p>
<div class="centered">
<demo-snippet>
<div class="container hbox" style="height:100px">
<label>class="hbox"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 150px">
<label>class="vbox"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
</div>
<h3>Justification versus Alignment</h3>
<p>The term "justification" in the flexbox specification refers to shifting, stretching, or spacing items in the same direction as the item orientation.
We can also shift, stretch, or space items in the "cross-axis" direction, which is the direction perpendicular to the item orientation; the flexbox specification refers to this as "alignment". </p>
<p>
Therefore, when we want to "justify" items, we would have to use flexbox style properties that are confusingly named "justify-content", "align-content", or "flex-grow".
And when we want to "align" items in the cross-axis direction, we would use flexbox style properties that are named "align-items" or "align-self" (with values of e.g. "flex-start").
</p>
<p>
Instead of using this flexbox terminology, every class that determines how we shift, stretch, or space items in a flexbox container starts with either <code>halign-</code> or <code>valign-</code>. And we determine whether "alignment" or "justification" properties are used internally based on whether the item orientation agrees with the alignment direction.
</p>
<p>
For example a container with
<code>class="<b>hbox</b> <b>halign</b>-items-center"</code> will center items in the horizontal direction, and this is also true for a container with <code>class="<b>vbox</b> <b>halign</b>-items-center"</code>.
Similarly a container with
<code>class="<b>hbox</b> <b>valign</b>-items-center"</code> will center items in the vertical direction, and this is also true for a container with <code>class="<b>vbox</b> <b>valign</b>-items-center"</code>.
</p>
<p>
By default, items are shifted to the "start"-side of the container, which is the left side of an hbox and the top side of a vbox.
Then we can add one of the <code>halign-items-*</code> classes to align items in the horizontal direction, while the <code>valign-items-*</code> classes align items in the vertical direction.
</p>
<div class="centered">
<h4>Start-justified</h4>
This is the default for hbox and vbox.
<demo-snippet>
<div class="container hbox halign-items-start" style="height: 100px">
<label>class="hbox halign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-start" style="height: 150px">
<label>class="vbox valign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Center-justified</h4>
<demo-snippet>
<div class="container hbox halign-items-center" style="height: 100px">
<label>class="hbox halign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-center" style="height: 150px">
<label>class="vbox valign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>End-justified</h4>
<demo-snippet>
<div class="container hbox halign-items-end" style="height: 100px">
<label>class="hbox halign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-end" style="height: 150px">
<label>class="vbox valign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Cross-axis start-alignment</h4>
<demo-snippet>
<div class="container hbox valign-items-start" style="height: 100px">
<label>class="hbox valign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-start" style="height: 150px">
<label>class="vbox halign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Cross-axis center-alignment</h4>
<demo-snippet>
<div class="container hbox valign-items-center" style="height: 100px">
<label>class="hbox valign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-center" style="height: 150px">
<label>class="vbox halign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Cross-axis end-alignment</h4>
<demo-snippet>
<div class="container hbox valign-items-end" style="height: 100px">
<label>class="hbox valign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-end" style="height: 150px">
<label>class="vbox halign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>More alignment combos</h4>
<demo-snippet>
<div class="container hbox halign-items-center valign-items-start" style="height: 100px">
<label>class="hbox halign-items-center valign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-center valign-items-center" style="height: 100px">
<label>class="hbox halign-items-center valign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-center valign-items-end" style="height: 100px">
<label>class="hbox halign-items-center valign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-end valign-items-start" style="height: 100px">
<label>class="hbox halign-items-end valign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-end valign-items-center" style="height: 100px">
<label>class="hbox halign-items-end valign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-end valign-items-end" style="height: 100px">
<label>class="hbox halign-items-end valign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-center halign-items-start" style="height: 150px">
<label>class="vbox vbox valign-items-center halign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-center halign-items-center" style="height: 150px">
<label>class="vbox vbox valign-items-center halign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-center halign-items-end" style="height: 150px">
<label>class="vbox vbox valign-items-center halign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-end halign-items-start" style="height: 150px">
<label>class="vbox vbox valign-items-end halign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-end halign-items-center" style="height: 150px">
<label>class="vbox vbox valign-items-end halign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-end halign-items-end" style="height: 150px">
<label>class="vbox vbox valign-items-end halign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
</div>
<h3>Stretching</h3>
<p>
You'll notice above that, unless a cross-axis alignment is specified, the default behavior of flex boxes is to stretch the items in the cross-axis dimension. So by default, hbox items will stretch vertically and vbox items will stretch horizontally.
</p>
<p>
No matter what item-alignment is specified in the container, we can override the alignment for each item with a similarly-named class. For example, if we want to vertically align one item in an hbox, we can add the <code>valign-start</code> class to that item.
The next examples show the default stretch behavior, and the per-item alignment classes.
</p>
<div class="centered">
<h4>Cross-axis stretch alignment (default)</h4>
<demo-snippet>
<div class="container hbox" style="height:100px">
<label>class="hbox"</label>
<div class="valign-stretch">class="valign-stretch"</div>
<div>(default)</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 150px">
<label>class="vbox"</label>
<div class="halign-stretch">class="halign-stretch"</div>
<div>(default)</div>
</div>
</demo-snippet>
<h4>Per-item alignment</h4>
<demo-snippet>
<div class="container hbox" style="height: 150px">
<label>
class="hbox"
</label>
<div class="valign-start">valign-start</div>
<div class="valign-center">valign-center</div>
<div class="valign-end">valign-end</div>
<div class="valign-stretch">valign-strech</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 200px">
<label>
class="vbox"
</label>
<div class="halign-start">halign-start</div>
<div class="halign-center">halign-center</div>
<div class="halign-end">halign-end</div>
<div class="halign-stretch">halign-strech</div>
</div>
</demo-snippet>
<!--
<h4>More stretching combos</h4>
<demo-snippet>
<div class="container hbox halign-items-start valign-items-stretch" style="height: 100px">
<label>class="hbox halign-items-start valign-items-stretch"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-center valign-items-stretch" style="height: 100px">
<label>class="hbox halign-items-center valign-items-stretch"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox halign-items-end valign-items-stretch" style="height: 100px">
<label>class="hbox halign-items-end valign-items-stretch"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-stretch valign-items-start" style="height: 150px">
<label>class="vbox halign-items-stretch valign-items-start"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-stretch valign-items-center" style="height: 150px">
<label>class="vbox halign-items-stretch valign-items-center"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox halign-items-stretch valign-items-end" style="height: 150px">
<label>class="vbox halign-items-stretch valign-items-end"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
</div> -->
</div>
<h3>Main-axis stretch alignment</h3>
<p>
The default behavior of flex boxes is to <b>not</b> stretch the items in the main-axis dimension. So by default, hbox items will shrink horizontally to the minimum required and vbox items will shrink vertically.
</p>
<p>
If at least one item is specified with a <code>halign-stretch</code> or <code>valign-stretch</code> class, all the other the items in the same axis will shrink to the minimum required size, unless they are also stretched.
</p>
<p>
If you want to stretch all items in an hbox proportionately, you can do so simply by adding the <code>halign-items-stretch</code> class to the container. Or if you want to stretch a single item in the main-axis dimension of an hbox, you can add the <code>halign-stretch</code> class to that item. Similarly, if you want to stretch all items in a vbox proportionately, you can do so simply by adding the <code>valign-items-stretch</code> class to the container. Or if you want to stretch a single item in the main-axis dimension of a vbox, you can add the <code>valign-stretch</code> class to that item.
The next few examples show these classes in action.
</p>
<div class="centered">
<demo-snippet>
<div class="container hbox halign-items-stretch" style="height:100px">
<label>class="hbox halign-items-stretch"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox" style="height:100px">
<label>class="hbox"</label>
<div>one</div>
<div class="halign-stretch">
two (class="halign-stretch")</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox valign-items-stretch" style="height: 200px">
<label>class="vbox valign-items-stretch" style="height:200px"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 200px">
<label>class="vbox"</label>
<div>one</div>
<div class="valign-stretch">
two (class="valign-stretch")
</div>
<div>three</div>
</div>
</demo-snippet>
</div>
<h3>Stretch ratios</h3>
Each item can be stretched a different amount by adding the <code>halign-stretch-X</code> or <code>valign-stretch-X</code> classes to each item. There are only three stretch ratios: 1, 2, and 3, and the default is 1. This amount of stretching is proportional to this ratio, and to the content. The next few examples show these classes in action.
<div class="centered">
<demo-snippet>
<div class="container hbox">
<label>class="hbox"</label>
<div class="halign-stretch-1">
halign-stretch-1</div>
<div class="halign-stretch-2">
halign-stretch-2</div>
<div class="halign-stretch-3">
halign-stretch-3</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 200px">
<label>class="vbox"</label>
<div class="valign-stretch-1">valign-stretch-1</div>
<div class="valign-stretch-2">valign-stretch-2</div>
<div class="valign-stretch-3">valign-stretch-3</div>
</div>
</demo-snippet>
</div>
<h3>Spacing</h3>
Another way to justify or align items is by adding space between items as well as before and after. This is normally only considered to be a main-axis justification, but when wrapping of items is enabled, it is also possible to "align" the multiple rows or columns
<div class="centered">
<h4>Justification, equal space between elements</h4>
<demo-snippet>
<div class="container hbox halign-items-space-between">
<label>class="hbox halign-items-space-between"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Justification, equal space around each element</h4>
<demo-snippet>
<div class="container hbox halign-items-space-around">
<label>class="hbox halign-items-space-around"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Justification, equal space between elements and ends</h4>
<demo-snippet>
<div class="container hbox halign-items-space-evenly">
<label>class="hbox halign-items-space-evenly"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<h4>Spacer</h4>
<p>A set of spacer classes are provided as a convenience to add invisible spacing between items. You can insert one or more spacers in an hbox or vbox. (The cross-axis spacers would only apply when wrapping, but then we could not indicate which spacer would go where. So we don't need the halign- or valign- prefix.)</p>
<p>By adding spacers, you can reproduce the equal space justification classes, but you also have much more flexibility to justify and align in many more ways. There are actually four spacer classes with different expansion weights, similar to the halign-stretch-* and valign-stretch-* classes: <code>spacer</code>,
<code>spacer-1</code>,
<code>spacer-2</code>, and
<code>spacer-3</code>.
</p>
<p>While spacers are normally invisible, in the following examples, we make the spacers visible with a translucent gradient pattern.</p>
<demo-snippet>
<div class="container hbox">
<label>class="hbox"</label>
<div>one</div>
<div class="spacer"></div>
<div>two</div>
<div class="spacer"></div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox" style="height: 250px">
<label>class="vbox"</label>
<div>one</div>
<div class="spacer-1"></div>
<div>two</div>
<div class="spacer-2"></div>
<div>three</div>
<div class="spacer-3"></div>
</div>
</demo-snippet>
</div>
<h3>Reversing and ordering</h3>
<p>All the items in a container can be reversed by adding the 'reverse' class to the container. The order of the items is the reverse of the original order, and the main-axis alignment is also reversed, from start to end or vice versa.</p>
<div class="centered">
<demo-snippet>
<div class="container hbox reverse">
<label>class="hbox reverse"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox reverse" style="height:150px">
<label>class="vbox reverse"</label>
<div>one</div>
<div>two</div>
<div>three</div>
</div>
</demo-snippet>
</div>
<h3>Wrapping</h3>
<p>Items can be wrapped by adding the 'wrap' class to the container</p>
<div class="centered">
<demo-snippet>
<div class="container hbox wrap" style="width: 100px">
<label>class="hbox wrap"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container vbox wrap" style="height: 75px">
<label>class="vbox wrap"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox reverse wrap" style="width: 100px">
<label>class="hbox reverse wrap"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox wrap halign-items-space-around"
style="width: 100px; height:100px">
<label>class="hbox wrap halign-items-space-around"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox wrap-reverse halign-items-space-around"
style="width: 100px; height:100px">
<label>class="hbox wrap-reverse halign-items-space-around"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
<demo-snippet>
<div class="container hbox wrap-reverse
halign-items-space-between
valign-items-space-between" style="width: 100px; height: 100px">
<label>class="hbox wrap-reverse
halign-items-space-between
valign-items-space-between"</label>
<div>one</div>
<div>two</div>
<div>three</div>
<div>four</div>
</div>
</demo-snippet>
</div>
<h3>Nesting hbox and vbox</h3>
<p>Containers can be nested inside other containers. </p>
<div class="centered">
<demo-snippet>
<div class="container hbox halign-items-space-around">
<label>class="hbox halign-items-space-around"</label>
<div class="container vbox">
<label>class="vbox"</label>
<div>one</div>
<div>two</div>
</div>
<div class="container vbox">
<label>class="vbox"</label>
<div>three</div>
<div>four</div>
</div>
</div>
</demo-snippet>
</div>
</body>
</html>