center a block on css code example
Example 1: how to center div
<!DOCTYPE html>
<html>
<head>
<style>
.center {
margin: auto;
width: 80%;
border: 3px solid #73AD21;
padding: 10px;
margin: 20px;
}
</style>
</head>
<body>
<h2>Center Align Elements</h2>
<p>To horizontally center a block element (like div), use margin: auto;</p>
<div class="center">
<p><b>Note: </b>Using margin:auto will not work in IE8, unless a !DOCTYPE is declared.</p>
</div>
</body>
</html>
Example 2: how to center div
<!DOCTYPE html>
<html>
<head>
<style>
div {
border: 3px solid #4CAF50;
padding: 5px;
}
.img1 {
float: right;
}
.clearfix {
overflow: auto;
}
.img2 {
float: right;
}
</style>
</head>
<body>
<p>In this example, the image is taller than the element containing it, and it is floated, so it overflows outside of its container:</p>
<div>
<img class="img1" src="pineapple.jpg" alt="Pineapple" width="170" height="170">
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus imperdiet, nulla et dictum interdum...
</div>
<p style="clear:right">Add a clearfix class with overflow: auto; to the containing element, to fix this problem:</p>
<div class="clearfix">
<img class="img2" src="pineapple.jpg" alt="Pineapple" width="170" height="170">
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Phasellus imperdiet, nulla et dictum interdum...
</div>
</body>
</html>