Edit in JSFiddle

<p class="basic-box-model">
    This is a humble box to show you the box model.
</p>

<div class="advanced-box-model">
    <p>"Of all the gin joints in all the towns in all the world, she walks into mine." &mdash; Casablanca</p>
</div>

.basic-box-model {
margin: 40px;
padding: 20px;    
border: 3px solid #CCC; 
}

.advanced-box-model {
margin: 30px 10px 20px 0px;    
padding: 20px 0px 20px 10px;
border: 5px solid #C7C2A1;   
width: 500px;
background-color: #F3F1DC;
font-size: 30px;
color: #00B29E;
}


p {
 margin: 0;   
}