I would like some one to provide me with a valid css which can put 2 Boxes inside a box.
like in the image I have given

CSS
<style type="text/css">
#adbox {
width: 602px;
height: 250px;
border-width: 0;
border-color: red;
}
#adbox .adbox1 {
width: 300px;
height: 250px;
border-width: 0;
border-color: red;
}
#adbox .adbox2 {
width: 300px;
height: 250px;
border-width: 0;
border-color: red;
}
</style>
HTML
<div align=center><div id="adbox">
<div class="adbox1">
<img src="foobar1.jpg" border="0" />
</div>
<div class="adbox2">
<img src="foobar.jpg" border="0" />
</div>
</div></div>
I’m going to guess that you want to align the boxes like in the image you provided.
You can do this with this css:
Example: http://tinkerbin.com/5MAX3Mt2