body {
   font-family: Arial, Helvetica, sans-serif;
}

a {
	font-size: 1.25em;
	display: block;
}
	
.center {
   text-align: center;
}

.main {
   max-width: 700px;
   margin: auto;
}

@media screen and (max-width: 400px) {
   .logo {width: 200px;}
}