body{
width: 770px;
padding: 0px;
margin-top: 0px;
margin=bottom: 0px;
margin-left: auto;
margin-right: auto;
text-align: center;
background-color: #037C77;
}
#x1{
width: 655px;
height: 150px;
margin-left: auto;
margin-right: auto;
color: #FFFF00;
font-size: 40px;
font-weight: bold;
background-image: url('img/x1.gif');
}