Template:TLSInfoBox/styles.css

.pi-theme-tls.portable-infobox {
  background: #f8f9fa;
  clear: right;
  float: right;
  font-size: 0.85em;
  margin: 0 0 15px 15px;
  width: 270px;
  padding: 4px;
  border: 1px solid #c8ccd1;
}

.pi-title {
  text-align: center;
}