@viewport { width: 1024px; }
body { 
  background: url(/img/city.jpg); 
  background-size: cover;
  margin: 0;
  font-family: 'Roboto', sans-serif;
}
a {
  color: #369;
}
ul.nav {
  list-style-type: none;
  margin: 0; padding: 0 20px 0 0;
  overflow: hidden;
  background: rgb(0,0,0);
  background: rgba(0,0,0,.5);
  border: 1px solid #fff;
  border-width: 0 0 1px 0;
}
ul.nav li { float: right; }
ul.nav li a {
  display: block;
  color: #fff;
  text-align: center;
  padding: 16px 14px;
  text-decoration: none;
  font-size: 2vw;
}
.logo {
  font-family: 'Libre Baskerville', serif;
  color: #fff;
  font-size: 4em;
  font-weight: bold;
  position: absolute;
  bottom: 0;
  cursor: default;
}
ul.nav li a:hover { background-color: #111; }
.box60, .boxplain {
  margin: 3vw;
  padding: 0.5vw;
  color: #000;
  cursor: default;
}
.box60 {
  width: 60vw;
  background: rgb(255,255,255);
  background: rgba(255,255,255,.5);
  font-size: 3vw;
}
.boxplain {
  font-size: 1vw;
}