body
{
  text-shadow: 1px 1px 5px black;
}

.myBackground
{
    position: relative;
}

.myBackground::after {
  content : "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background-image: url("../img/backgrounds/background_claas.jpg");
  width: 100%;
  height: 100%;
  opacity :1;
  z-index: -1;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center;
  background-size: cover;
}