html tutorial - How to create two div elements with same height side by side in CSS - html5 - html code - html form
Answer: Use the CSS3 flexbox
With CSS3 flex layout model you can very easily create the equal height columns or <div> elements that are aligned side by side. Just apply the display property with the value flex on the container element and the flex property with the value 1 on child elements, like this:
Example
<!DOCTYPE html>
<html lang="en">
<head>
<title>Creating Two Equal Height Columns with CSS</title>
<style type="text/css">
.flex-container{
width: 100%;
min-height: 400px;
margin: 0 auto;
display: -webkit-flex; /* Safari */
display: flex; /* Standard syntax */
}
.flex-container .column{
padding: 10px;
background: #dbdfe5;
-webkit-flex: 1; /* Safari */
-ms-flex: 1; /* IE 10 */
flex: 1; /* Standard syntax */
}
.flex-container .column.bg-alt{
background: #b4bac0;
}
</style>
</head>
<body>
<div class="flex-container">
<div class="column">Column 1</div>
<div class="column bg-alt">Column 2</div>
</div>
</body>
</html>