border-bottom

after the first div and close it in the last but border doesnot create in the bottom,it will create at the product an service heading.
this is what i used for the same.

<div style="border-bottom:1px solid #d9d9d9; padding:0 0 20px 0;">Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat.</div>
 
<div style="border-bottom:1px solid #d9d9d9; padding:0 0 20px 0;">
<div style="clear:both; padding:20px 0;">

<div class="grid_4 alpha">
<h1 class="front-heading">Products</h1>
<div class="subtitle">Making your workflow easier</div>
<img class="masked" src="<?php print base_path() . drupal_get_path('theme', 'corporateclean') ;?>/mockup/products.png"/>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat.
 
<div style="display:block; padding:30px 0 10px 0;"><a class="more" href="<?php print url('node/5');?>">See what we offer</a></div>
 
</div>
 
<div class="grid_4 omega">
<h1 class="front-heading">Services</h1>
<div class="subtitle">Problem solving at lightning speed</div>
<img class="masked" src="<?php print base_path() . drupal_get_path('theme', 'corporateclean') ;?>/mockup/services.png"/>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat.
 
<div style="display:block;  padding:30px 0 10px 0;"><a class="more" href="<?php print url('node/6');?>">See what we offer</a></div>
 
</div>
</div>
</div>

for further reference ill attach a png image for the same.
but what i want is border shown below the product and service column
PLz HELp !!!