h1 {
  height: 10:px;
  width: 1500:px;  
  border: 10px solid black;  
  outline: 5px solid gray;
  background-color: #ccc;
  padding: 10px;
  margin: 10px;
  }
#nav{
  text-align: justify; float:left;
margin:0 auto;  
}