Can anyone please help me in aligning this divs vertically i want secondDiv to come below firstDiv. i saw many posts but not able to resolve it can anyone change my code to work it.
<div>
    <div style="position:relative;width:800px;margin:0;padding:0">
        <div id="firstDiv" style="text-align:center;position:absolute;margin-top:0">
            <div>
                <span>
                    <input type="submit" title="" value="Select Photos From Your Computer"
                    name="sendBtn">
                </span>
            </div>
            <div style="width:492px;height:20px;position:absolute;top:8px;overflow:hidden;z-index:100">
                <form target="msa_frame" name="picForm" id="picForm" method="post" enctype="multipart/form-data">
                    <input type="file" style="opacity:0;font-size:20px;" accept="image/*"
                    name="d" id="d">
                </form>
            </div>
        </div>
        <div id="secondDiv" style="text-align:center;margin:3px 0 12px;">
            <span>You can add upto</span>
            <span style="font-weight:bold">3 Photos</span>
        </div>
    </div>
</div>
 
     
     
     
    
