.alignleft {
  float: left;
  margin: 0 5px 5px 0;
}

.alignright {
  float: right;
  margin: 0 0 5px 5px;
}

.centered {
  margin-left: auto;
  margin-right: auto;
  display: block;
  padding: 8px;
}

.gravatar {
  float: left;
  margin-right: 3px;
  margin-bottom: 3px;
}