body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-repeat: no-repeat;
  background-image: linear-gradient(to bottom, rgba(0,0,0,0.25), rgba(0,0,0,0.25)), url(images/craigcongo1.JPG);
  background-size: auto, cover;
  background-position: center, center center;
  background-attachment: fixed, fixed;
}

main {
  flex: 1;
  margin-top: 30px;
  margin-bottom: 60px;
}