.efz{
  border: 2px solid black;
  background-attachment: fixed; /* Parallax effect */
  background-position: center;  /* Parallax effect */
  background-repeat: no-repeat; /* Parallax effect */
  background-size: cover;       /* Parallax effect */
  color: black;
  height: 200px;                /* Parallax effect */
  background-color: white;

  background-image: url("../images/education/efz.jpg");
  background-attachment: fixed;
}
.sjtu{
  background-attachment: fixed; /* Parallax effect */
  background-position: center;  /* Parallax effect */
  background-repeat: no-repeat; /* Parallax effect */
  background-size: cover;       /* Parallax effect */
  color: white;
  height: 200px;                /* Parallax effect */
  background-color: black;

  background-image: url("../images/education/sjtu.jpg");
  background-attachment: fixed;
}
.um{

  background-attachment: fixed; /* Parallax effect */
  background-position: center;  /* Parallax effect */
  background-repeat: no-repeat; /* Parallax effect */
  background-size: cover;       /* Parallax effect */
  color: white;
  height: 200px;                /* Parallax effect */
  background-color: black;

  background-image: url("../images/education/um.jpg");
  background-attachment: fixed;

}