html {
  background: linear-gradient(rgba(257, 546, 250, 0.9), rgba(257, 256, 250, 0.9)),
              url('../assets/openbsdrails/openbsd-rails.jpg');
  background-size: cover;
  background-position: center;
}

main {
  width: 100%;
  margin: 0 auto;

  article {
  }
}

.intro-img {
  display: block;
  margin: 0 auto;

}


@media screen and (min-width: 760px) {
  main {
    width: 760px;
  }
  article {
    width: 100%;
  }
  .intro-img {
    margin: 0;
    float: right;
    padding-left: 1em;
  }
}