.floating_img_right {
  margin-left: 20px;
  float: right;
}

.centered {
  margin: auto;
  display: block;
  width: 80%;
}

.centered_img {
  margin: auto;
  display: block;
  width: 50%;
}

.caption {
  margin: auto;
  display: block;
  left: 50%;
  text-align: center;
}