#localhost-status {
  display: none;
  position: fixed;
  top: 2rem;
  left: 2rem;
  color: #ff5555;
  background: rgba(255,255,255,0.7);
  padding: 4px 9px 4px;
  border-radius: 13px;
  font-weight: normal;
  font-size: 10px;
  pointer-events: none;
  user-select: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.3);
  z-index: 10;
}
#localhost-status::after {
  content: "localhost";
}
.localhost #localhost-status {
  display: inline-block;
}