css
body, h1, h2, h3, h4, h5, h6 {
  font-family: "Lato", sans-serif;
}

body, html {
  height: 100%;
  color: #777;
  line-height: 1.8;
}

/* Create a Parallax Effect
.bgimg-1, .bgimg-2, .bgimg-3, .bgimg-4 {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
} */

/* Background images — no parallax (scrolling) */
.bgimg-1, .bgimg-2, .bgimg-3, .bgimg-4 {
  background-attachment: scroll;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* First image (Logo. Full height) */
.bgimg-1 {
  background-image: url("background/DSC09645.png");
  min-height: 1000px;
}

/* Second image (CV) */
.bgimg-2 {
  background-image: url("background/DSC09631.jpg");
  min-height: 1000px;
}

/* Third image (Research) */
.bgimg-3 {
  background-image: url("background/fullskyfin_HI.jpg");
  min-height: 600px;
}

/* Fourth image (Contact) */
.bgimg-4 {
  background-image: url("background/accretion_disk.png");
  min-height: 600px;
}

.w3-wide {
  letter-spacing: 10px;
}

.w3-hover-opacity {
  cursor: pointer;
}

/* Turn off parallax scrolling for tablets and phones
@media only screen and (max-device-width: 1600px) {
  .bgimg-1, .bgimg-2, .bgimg-3, .bgimg-4 {
    background-attachment: scroll;
    min-height: 600px;
  }
} */