.bg-image1 {
  background-image: url('../images/img-circuitboard.jpg');
  background-color: rgb(85, 180, 212);
}

.bg-image2 {
  background-image: url('../images/img-circuit.jpg');
  background-color: rgb(85, 180, 212);
}

.bg-image3 {
  background-image: url('../images/img-mountain.jpg');
  background-color: rgb(85, 180, 212);
}

.bg-image4 {
  background-image: url('../images/img-fiberlines.jpg');
  background-color: rgb(85, 180, 212);
}

/* Create the parallax scrolling effect */
.bg-image1, .bg-image2, .bg-image3, .bg-image4 {
  min-height: 100px;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}