.blitz-message {
  font-family: -apple-system, BlinkMacSystemFont, 'avenir next', avenir, 'segoe ui', 'helvetica neue', helvetica, Cantarell, Ubuntu, roboto, noto, arial, sans-serif;
  font-size: 5em;
  font-weight: bold;
  text-align: center;
  text-shadow: 5px 5px 15px black;
  color: white;
  background-color: rgba(0,0,0,0.5);
  position: fixed;
  z-index: 9999;
  top: 45%;
  left: 0;
  width: 100%;
  padding: 20px 40px;
  box-sizing: border-box;
  outline: 5000px solid rgba(0,0,0,0.5);
  opacity: 0;
  -webkit-transition: opacity 250ms;
  transition: opacity 250ms;
}

.blitz-message.bm-fade-in {
  opacity: 1;
}