body {
  background-image: url("paper.jpg");
  background-attachment: fixed;
  line-height: 2.1;
}
img{
  border-radius: 25px;
  border: 4px solid #767676;
  background-color: white;
}
.stuff{
  position:absolute;
  top: 100px;
  left: 50%;
  transform: translate(-50%, 0%);
  line-height: 1.2;
  visibility: hidden;
  width: 768px;
  border-radius: 25px;
  border: 4px solid #767676;
  background-color: wheat;
  padding: 10px;
}
span{
  margin-left: 5px;
  margin-right: 5px;
  margin-bottom: 5px;
}
.image-stack {
  position: relative;      /* Creates positioning context */
  display: inline-block;   /* Stays inline without pushing other elements */
  margin: 0px;
}

.image-stack img {
  display: block;
  margin-top: 5px;
}