.test-environment-banner {
  position: fixed;
  z-index: 9999;
  inset: 0 0 auto;
  min-height: 36px;
  padding: 9px 16px;
  box-sizing: border-box;
  background: #243c2a;
  color: #f4ffe3;
  font: 600 13px/18px -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: .02em;
  text-align: center;
  box-shadow: 0 2px 12px rgba(20, 43, 25, .18);
}
html.test-environment body { padding-top: 36px; }