.performance-monitor {
  position: fixed;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px;
  border-radius: 5px;
  font-size: 12px;
  z-index: 9999;
  line-height: 16px;
}
.performance-monitor > div {
  display: flex;
}
.performance-monitor > div > span:first-child {
  width: 66px;
  text-align: left;
}
.performance-monitor > div > span:last-child {
  width: 44px;
  text-align: left;
}