header {
position:fixed;
text-align:center;
width: 100%;
left: 0;
top:0;
background: #67BE4B;
height:30px;
padding-top:10px;}

h1 {text-align:center;margin-top:50px;}
			
a {text-decoration:none; color:black;}
			
section a:hover {font-size:17px;}
			
ul li {list-style:none;}
li {margin-bottom:5px;}

@media only screen and (max-width: 799px) {
	img {display: block;margin-left:auto;margin-right:auto;}
}
@media only screen and (min-width: 800px) {
	body {margin-right:30%;margin-left:30%}
}