html{border-top:5px solid #c62828}
#faixa-teste{position:fixed;left:10px;bottom:10px;z-index:2147483647;background:#c62828;color:#fff;
  font:700 12px/1.4 system-ui,sans-serif;padding:5px 12px;border-radius:8px;pointer-events:none;
  box-shadow:0 2px 8px rgba(0,0,0,.3);letter-spacing:.3px}