body {
  margin-left: 20%;
  margin-right: 20%;
  outline-style: solid;
  outline-color: navy;
  outline-width: 2px;
  padding: 10px;
  background-color: lightgrey;
} 
html {
  background-image: url(/Winterstillness.jpg);
  background-size: cover;
  background-position: center;
}