.pager-block {
  text-align: center;
}
.main-table {
  min-width: 480px;
  margin: 16px auto;
}
.main-table td,
.main-table th {
  padding: 6px;
}
.main-table .gravatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 8px;
}