/*img.centered {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 25%;
}

img.leftaligned {
  display: block;
  position: relative;
  left: 50px;
  width: 25%;
}

img.rightaligned {
  display: block;
  position: relative;
  right: 0px;

}
*/

div.relative {
  position: relative;
  width: 600px;
  height: 400px;
  border: 5px solid #73ADA1;
}

div.top {
  display: block;
  position: relative;
  top: 0px;
  margin-left: auto;
  margin-right: auto;
  width:  25%;
  height: 150px;
    border: 1px solid #ffffff;
}

div.left {
  position: absolute;
  left: 0px;
  top: 200;
  width:  150px;
  height: 150px;
    border: 1px solid #ffffff;
}

div.right {
  position: absolute;
  right: 0px;
  top: 200;
  width: 150px;
  height: 150px;
    border: 1px solid #ffffff;
}

div.bottom {
  display: block;
  position: relative;
  top: 400px
  bottom: 0px;
  margin-left: auto;
  margin-right: auto;
  width:  25%;
  height: 150px;
    border: 1px solid #ffffff;
}