Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

Details

Privacy

Go PRO Window blinds lowered to protect code. Code Editor with window blinds (raised) and a light blub turned on.

Keep it secret; keep it safe.

Private Pens are hidden everywhere on CodePen, except to you. You can still share them and other people can see them, they just can't find them through searching or browsing.

Upgrade to PRO

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

Template

Make Template?

Templates are Pens that can be used to start other Pens quickly from the create menu. The new Pen will copy all the code and settings from the template and make a new Pen (that is not a fork). You can view all of your templates, or learn more in the documentation.

Template URL

Any Pen can act as a template (even if you don't flip the toggle above) with a special URL you can use yourself or share with others. Here's this Pen's template URL:

Screenshot

Screenshot or Custom Thumbnail

Screenshots of Pens are shown in mobile browsers, RSS feeds, to users who chose images instead of iframes, and in social media sharing.

This Pen is using the default Screenshot, generated by CodePen. Upgrade to PRO to upload your own thumbnail that will be displayed on previews of this pen throughout the site and when sharing to social media.

Upgrade to PRO

HTML

              
                <h1>New syntax of Flexible box layout module (flexbox)</h1>
<p><b>Only works in <a href="https://tools.google.com/dlpage/chromesxs">Chrome Canary</a> so far!</b></p>

<h2>.flexbox1</h2>
<p>Horizontal orientation. The first and the third element have a predefined width, the middle takes up the remaining space.</p>
<div class="flexbox flexbox1">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox2</h2>
<p>The first and second element take up 1/4 of the available space (<code>-webkit-flex: 1</code>), the third takes up 2/4 (<code>-webkit-flex: 2</code>). 1 + 1 + 2 = 4/4</p>
<div class="flexbox flexbox2">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox3</h2>
<p>Vertical orientation. The first and the third element take up 1/10 of the available space, the second takes 8/10. 1 + 8 + 1 = 10/10.</p>
<div class="flexbox flexbox3">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox4</h2>
<p>The elements are aligned to the right (<code>-webkit-justify-content: flex-end</code>). Can also be centred, justified etc.</p>
<div class="flexbox flexbox4">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox5</h2>
<p>The whole container is vertically centered (<code>-webkit-align-content: center</code>).</p>
<div class="flexbox flexbox5">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox6</h2>
<p>The elements can also be wrapped. If the width of the container (<code>width: 300px</code>) is smaller than the preferred width of the elements (<code>-webkit-flex: 80px 1</code>. The <code>1</code> states that the available space should be evenly distributed) than a wrap occurs. </p>
<div class="flexbox flexbox6">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
	<div class="item item4">DIV 4</div>
</div>

<hr>

<h2>.flexbox7</h2>
<p>It's also possible to state <code>min-width</code> and <code>max-width</code> (respectivley <code>min-height</code> and <code>max-height</code>) for the elements. Although <code>-webkit-flex</code> is set to <code>1</code> (which means that the available space should be evenly distributed), the first is shrinked through <code>max-width: 50px</code> and the third one is enlarged by <code>min-width: 500px</code>.</p>
<div class="flexbox flexbox7">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<hr>

<h2>.flexbox8</h2>
<p>The individual elements (or the container altogether with <code>-webkit-align-items</code>) can also be aligned vertically (<code>-webkit-align-self</code>). </p>
<div class="flexbox flexbox8">
	<div class="item item1">DIV 1</div>
	<div class="item item2">DIV 2</div>
	<div class="item item3">DIV 3</div>
</div>

<p>Demo by Christian Krammer, ck@css3files.com, <a href="http://www.css3files.com">http://www.css3files.com</a></p>

<br><br><br><br><br><br>
              
            
!

CSS

              
                /* Demo by Christian Krammer, ck@css3files.com, http://www.css3files.com */

/* Official specifications: http://www.w3.org/TR/css3-flexbox/#flex-wrap-property */

/* New syntax of Flexible box layout module (flexbox) */
.flexbox {
	display: -webkit-flex; /* Further values: -webkit-inline-flex, then it's an inline element */
	-webkit-flex-direction: row; /* Alignment (in this case from left to right). Further values: column (top to bottom), row-reverse (right to left), column-reverse (bottom to top) */
    /* -webkit-flex-flow: row; */ /* Same as -webkit-flex-direction, but it's a shorthand for both -webkit-flex-direction und -webkit-flex-wrap (see .flexbox6) */ 
    height: 100px;
    background: lightgrey;
}

.flexbox1 .item {background: red; height: 100px}

.flexbox1 .item + .item {margin-left: 10px}

.flexbox1 .item1 {width: 200px}

.flexbox1 .item2 {-webkit-flex: 1} /* States that the middle element is assigned the remaining space */

.flexbox1 .item3 {width: 150px}


.flexbox2 .item {background: green; height: 100px}

.flexbox2 .item + .item {margin-left: 10px}

.flexbox2 .item1 {-webkit-flex: 1} /* The first and the second element take up the 1/4 of the available space */

.flexbox2 .item2 {-webkit-flex: 1}

.flexbox2 .item3 {-webkit-flex: 2} /* The third element takes up 2/4 */


.flexbox3 {
	-webkit-flex-direction: column;
	width: 100px;
	height: 300px;
}

.flexbox3 .item {background: blue}

.flexbox3 .item + .item {margin-top: 10px}

.flexbox3 .item1 {-webkit-flex: 1} /* The first and the third element take tp 1/10 of the space */

.flexbox3 .item2 {-webkit-flex: 8} /* The second one takes up 8/10 */

.flexbox3 .item3 {-webkit-flex: 1}


.flexbox4 {
	-webkit-justify-content: flex-end; /* Horizontal alignment of the contained elements. Further values: flex-start, center, space-between (proportional distribution), space-around (proportional distribution, but with half the gap at the start and the end) */
}

.flexbox4 .item {background: magenta; width: 100px}

.flexbox4 .item + .item {margin-left: 10px}


.flexbox5 {
	-webkit-align-content: center; /* Vertical alignment of the container. Same possible values as with -webkit-justify-content. Only works when -webkit-flex-wrap: wrap is set (see .flexbox6) */
	-webkit-flex-wrap: wrap;
	height: 150px;
}

.flexbox5 .item {background: orange; -webkit-flex: 1; height: auto; border: 1px solid; height: 50px}

.flexbox5 .item1 {-webkit-order: 3} /* Order */

.flexbox5 .item2 {-webkit-order: 1}

.flexbox5 .item3 {-webkit-order: 2}


.flexbox6 {
	-webkit-flex-wrap: wrap; /* States how the elements wrap, if the remaining space doesn't suffice. Further values: nowrap (default value) und wrap-reverse (flips over the alignment) */
	width: 300px;
}

.flexbox6 .item {
	background: pink;
	border: 1px solid;
	-webkit-flex: 80px 1; /* The optional declaration of the width states how wide the element should be preferably. Since the container is 300px wide in this case, only three fit into it at the width of 80px each. The fourth gets pushed to the next line. "1" states that all the elements should take up an even amount of space */
} 


.flexbox7 .item {
	background: crimson;
	border: 1px solid;
	-webkit-flex: 1;
} 

.flexbox7 .item1 {
	max-width: 50px; /* Can be declared optionally and states the maximal width of the element. Overwrites -webkit-flex  */
} 

.flexbox7 .item3 {
	min-width: 500px; /* Can be declared optionally and states how wide an element must be at least. Overwrites -webkit-flex */
} 


.flexbox8 {
	-webkit-align-items: flex-end; /* Vertical alignment of the contained elements. Further values: flex-start, center, baseline (aligns all elements on the same baseline when different font sizes are set), stretch */
}

.flexbox8 .item {
	background: yellow;
	border: 1px solid;
} 

.flexbox8 .item1 {
	-webkit-flex: 2;
	height: 20px;
	/* -webkit-align-self: flex-end; */ /* -webkit-align-items can be overwritten by -webkit-align-self at each element */
} 

.flexbox8 .item2 {
	-webkit-flex: 3;
	height: 30px;
	/* -webkit-align-self: flex-start; */
} 

.flexbox8 .item3 {
	-webkit-flex: 1;
	height: 40px;
	/* -webkit-align-self: center; */
} 
              
            
!

JS

              
                
              
            
!
999px
How would you React if I said I love Vue?

Console