<style>
.callout {
  border: none;
  padding: 1em;
  border-radius: 4px;
  background-color: #f0f8ff;
}
.callout-justification {
  border-left: 4px solid #007acc;
  background-color: #e7f3ff;
  padding: 1em;
  border-radius: 0.25em;
}
</style>