body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;

  /* Background image added here */
  background-color: #09334f;                 /* fallback color */
  background-image: url('images/error.png'); /* <-- update path if needed */
  background-repeat: no-repeat;
  background-position: center center;        /* centers the photo */
  background-size: contain;                  /* keeps full image visible */
  background-attachment: fixed;
}

.content {
  padding: 5rem 3rem 0 25rem;
  position: relative;
  z-index: 10;
  font-family: "Source Sans Pro", sans-serif;
  color: #FFF;
}

.content h3 {
  margin: 0 0 0.8rem;
  font-size: 2.625rem;
  font-weight: 900;
  line-height: 120%;
}

.content p {
  font-size: 1.25rem;
  line-height: 150%;
  color: #d1e2ed;
}

.content p span {
  text-decoration: line-through;
}

canvas {
  position: fixed;
  top: 0;
  left: 0;
}
original