body, html {
    height: 100%;
  }

  .bg {
    background-image: url("Hintergrund.jpg");
    height: 100%;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
  }
  
  h1 {
    padding:40px;
    background-color: darkgray;
  text-align: center;
  text-shadow: 2px 2px 5px red;
  color: aliceblue;
  }