#wrapper {
  position: fixed; 
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000;
}

#invaderers {
  max-width: 100vw;
  max-height: 100vh;
  display: flex;
  flex-wrap: wrap;
  width: 95vw; 
  height: 95vw; 
}

@media (min-aspect-ratio: 1/1) {
  #invaderers {
    width: 95vh; 
    height: 95vh; 
  }
}


#restart {
  display:none;  
  position: fixed;
  top: 1vw;
  left: 1vw;
  right: 1vw; 
  bottom: 1vw;
  background: rgba(0, 0, 0, .5);
}

#restart .inner {
  max-width: 830px;
  width: 80%;
  padding: 5rem;
  margin: 0 auto;
  text-align: center;
  position: relative; 
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, .4);
  color: #fff;
}

#restart .inner > *:not(:last-child) {
  margin-bottom: 1rem;  
}

#restart .message {
  font-size: 1.5rem;
}

#restart .outcome-status img {
  width: 90%;
  max-width: 700px;
}

#restart .score {
}

button {
  color: #fff;
  font-weight: bold;
  background: #005522;
  border: none;
  padding: 1rem 2rem;
  border-radius: 3px;
  font-size: 1.1rem;
}