In my example there are two div, I just wanted that first div come down after second div using css let suppose below example
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<div class="div1" >
This is first div.
</div>
<div class="div2" >
This is second div.
</div>
</body>
</html>
Above code give output like below
This is first div.
This is second div.
but i wanted output should be
This is second div.
This is first div.
Don't use margin top:20px because text in mycase will bigger then in example.