Margin-Top not working?
===

Can someone tell me what I coded wrong? Everything is working, the only thing is that there is no margin at the top.

This is the html part

    <div id="contact_us"> <!-- BEGIN CONTACT US -->
	<span class="first_title"> Contact</span><span class="second_title">Us </span>
		
	<p class="content"> For any questions whatsoever please contact us through the       following e-mail address:
	</p> </br></br>
	<p class="e-mail"> info@e-mail.com </p></br></br></br></br>
	
			
	
	<p class="read_more"> <a href="underconstruction.html"> Read More</a> </p>
	</div> <!-- END CONTACT US -->

This is the css part

    span.first_title{

	margin-top: 20px;
	margin-left: 12px;
	font-weight: bold;
	font-size:24px;
	color: #221461;
	}
	
    span.second_title{
	
	margin-top: 20px;
	font-weight: bold;
	font-size:24px;
	color: #b8b2d4;
	}
	