body {
  background-color: black;
  color: black;
  font-family: Arial;
}
img {
  max-width: 100%;
  height: auto;
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}
.right {
  float: right;
  margin-left: 1em;
}
.left {
  float: left;
  margin-right: 1em;
}
.center {
  display: block;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}
@media only screen and (min-width: 600px) {
  .small {
    max-width: 60%;
    height: auto;
  }
}
.caption {
  margin-top: 0;
  font-size: 0.9em;
  font-style: italic;
}