How to put one div infront of other div using CSS in ASP.Net

Hi Nedash,

Please refer below

HTML 

<div id="Center">
    <div id="Behind" style="width: 50px;">
        Div 1
    </div>
    <div id="TopOne" style="width: 150px;">
        Div 2
    </div>
</div>
<div>
    <style type="text/css">
        #Behind
        {
            background-color: orange;
            position: absolute;
            z-index: -1;
            padding: 50px;
        }
        #TopOne
        {
            position: absolute;
            top: 90px;
            left: -30px;
            background-color: GrayText;
            padding: 30px;
        }
        #Center
        {
            width: 50px;
            height: 50px;
            position: absolute;
            top: 0;
            bottom: 25%;
            left: 0;
            right: 0;
            margin: auto;
        }
    </style>
</div>

Screenshot