.main_nav{

color: #00554d;
	font:Arial, Helvetica, sans-serif;
	font-size:18px;
	line-height: 0.7cm;
}

.main_nav ul {

list-style-type: none;


}

.main_nav li {

width:180px;
display:block;
float:left;
padding: 0 5px 0 10px;
}