body{
  background: gray;
  margin: 5px;
  padding: 0;
  text-align: center;
}

body img{
  max-width: 100%;
  height: auto;
}

h1{
  font-size: 1.5em;
}

h1 a{
  color: black;
}

.nav{
}

.nav a{
  color: white;
  text-decoration: none;
}