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<div class="wrapper">
<h1>display: flow-root example</h1>
<p>A new value of the display property that will enable containers to clear floats. <em>Needs Chrome Canary or Firefox Nightlies.</em></p>
<h2>Default behavior</h2>
<p>The following item is a wrapper containing a block that is floated left.</p>
<div class="container container1">
<div class="item"></div>
Example one
</div>
<p>The border on the containing block only wraps the text as the floated element is taken out of flow.</p>
<p>The content following the box will also rise up and wrap around the float unless we set it to clear.</p>
<h2 class="clear">The clearfix hack</h2>
<p>In this next item we use a clearfix hack to cause the wrapper to clear the floated item.</p>
<div class="container container2">
<div class="item"></div>
Example two
</div>
<h2>Using display: flow-root</h2>
<p>CSS now has a way to cause elements to clear floats. We set the value of display to flow-root and our floated box is cleared.</p>
<div class="container container3">
<div class="item"></div>
Example three
</div>
</div>
.container2::after {
content: "";
display: block;
clear: both;
}
.container3 {
display: flow-root;
}
.container {
border: 2px solid #3bc9db;
border-radius: 5px;
background-color: #e3fafc;
width: 400px;
padding: 5px;
}
.item {
height: 100px;
width: 100px;
background-color: #1098ad;
border: 1px solid #0b7285;
border-radius: 5px;
float: left;
}
h2 {
padding: 2em 0 0 0;
}
.clear {
clear: both;
}
body {
font: 18px Helvetica, sans-serif;
}
.wrapper {
max-width: 600px;
margin: 40px auto;
}
Also see: Tab Triggers