body{font-family:Arial;}
p.margin
{
margin-top:50px;
margin-bottom:100px;
margin-right:100px;
margin-left:100px;
}
h1.margin
{
margin-top:50px;
margin-bottom:10px;
margin-right:100px;
margin-left:100px;
} 
h3.margin
{
margin-top:10px;
margin-bottom:10px;
margin-right:100px;
margin-left:100px;
}