Here is the solution you requested.
VIEW WORKING DEMO
Embedded HTML Code:
<div class="center-label"> Centered label </div>
Customized CSS Code:
.center-label{
vertical-align: middle;
background:#f0f0f0;
display:inline-block;
width:100%;
text-align:center;
height:150px;
line-height:150px;
}
I hope this meets your requirements.
NOTE: To maintain proper alignment, ensure that the height and line-height values are identical. Although you can adjust these values to fit your design, I have used 150px for demonstration purposes.