body {
  font-family: Arial, sans-serif;
}
body {
  margin: 0px;
  background-color: #888;
  background-image: url("tausta.jpg");
  background-size:cover;
  background-attachment:fixed;
  background-position: center;
}
.container {
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  background-color: white;
  padding: 40px;
}
.keskitetty {
  text-align: center;
}
.oikealla {
  float: right;
  margin-left: 20px;
  margin-bottom: 20px;
}
img {
  max-width: 35%;
  height: auto;
}