.jumbotron {
  margin: 15px 30px 0px 30px;
  border-radius: 10px;
  background: linear-gradient(rgba(0, 0, 250, 0.25), rgba(125, 250, 250, 0.45)), url(https://source.unsplash.com/1600x1050/?nature);
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: white !important;
  height: 340px;
}
.icon-color {
  color: black;
}