body {
	font-family: sans-serif;
	background: url("background.jpg");
	background-size: 100%;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-color: #94a0ab;
}

div.main {
	width: 50vw;
  	margin: 0px auto 15px;
}
ul.navigation {
	list-style: none;
  	margin: 0;
  	padding: 0;
  	display: flex;
  	justify-content: center;
  	position: sticky;
  	position: -webkit-sticky;
  	top: 0;
  	z-index: 1;
}
ul.navigation a {
	background-color: black;
	color: white;
	padding: 2px;
}
ul.navigation li {
	padding: 10px;
}
h1{
	text-align: center;
	text-shadow: -1px 0 white, 0 1px white, 1px 0 white, 0 -1px white;
}
 /* unvisited link */
a:link, a:visited {
  color: black;
  text-decoration: none;
}

/* mouse over link */
a:hover, a:active {
  color: blue;
} 
div.content {
	background-color: #ffffff80;
};
div.gallery {
  border: 1px solid #ccc;
}

div.gallery:hover {
  border: 1px solid #777;
}

div.gallery img {
  width: 100%;
  height: auto;
}

div.desc {
  padding: 15px;
  text-align: center;
}

* {
  box-sizing: border-box;
}

.responsive {
  padding: 0 6px;
  float: left;
  width: 24.99999%;
}

@media only screen and (max-width: 700px) {
  .responsive {
    width: 49.99999%;
    margin: 6px 0;
  }
}

@media only screen and (max-width: 500px) {
  .responsive {
    width: 100%;
  }
}

.clearfix:after {
  content: "";
  display: table;
  clear: both;
}