body{
  background-image: url("https://images.unsplash.com/photo-1465101162946-4377e57745c3?fm=jpg&q=60&w=3000&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxzZWFyY2h8Mnx8Zm9uZG8lMjBkZSUyMGdhbGF4aWF8ZW58MHx8MHx8fDA%3D") ;
   background-size: cover ;
}

img{
  width: 500px;
  display: block;
  margin-left:40%;
  margin-top:300px;
}