html, body {
  height: 100%;
}

.main-header {
  text-align: center;
  color: white;
  background-image: linear-gradient( rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6) ), url('../_imgs/bg-new2.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center center;
  background-size: cover;
}

hr {
  border-top: solid 2px white;
}

.line {
  border-top: solid 50px #b2bec3;
  box-shadow: 1px -2px #888888;
  /*left: 68%;
  bottom: 50%;*/

}
.card {
    box-shadow: 6px 6px 6px 6px rgba(0, 0, 0, 0.2);
}

.a-img {
  background-image: linear-gradient( rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7) ), url('../_imgs/about-us-img.jpg');
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: top top;
  background-size: cover;
  color: white;
}