To the content center in the middle css code example
Example 1: css center text in div vertically
<!DOCTYPE html>
<html>
<head>
...
<style type="text/css">
div{
width: 200px;
height: 200px;
border: solid green;
display: table-cell;
vertical-align: middle;
}
</style>
</head>
<body>
<div>Vertikal ausgerichteter Text</div>
</body>
</html>
Example 2: center text in div container
text-align: center