body {
  margin: auto;
  text-align:justify;
  width: 50%;
  max-width: 768px;
}
.centered {
  text-align:center;
}
.simplistic {
  text-align:center;
}
.simplistic img {
  border-bottom: 1px solid blue;
}
.simplistic img:hover {
  border: 1px solid blue;
}
.centered {
  text-align:center;
}