html, body {
  margin: 0;
  padding: 0;
}

.overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.882);
  z-index: 18;
}
.grabbable {
  cursor: move; /* fallback if grab cursor is unsupported */
  cursor: grab;
  cursor: -moz-grab;
  cursor: -webkit-grab;
}
body {
  font-size: x-large;
  font-family: "Host Grotesk", sans-serif;
  opacity: '50%';
   background-color: #000000;
   margin: 0;
   padding: 0;
   display: flex;
   align-items: center;
   height: 100;
   cursor: grabbing;  
}

canvas {
  display: block;
}

.message {
  color:white ;
  block-size: 80px;
  position: absolute;
  bottom: 30px;
  left: 50%;
 transform: translateX(-50%);
 padding: 20px 20px;
 background-color: #000000;
 font-size: 130%;
 border-radius: 5px;
 width: 100%;
 display: none;
 width: 90%;
}


.popup {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 900px;
  max-width: 1500px;
  background: #000000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  z-index: 20;
}


  #celestial-map {
  width: 100%;
  size: 500px;
  height: 900px;
  background: url('https://cdn.pixabay.com/photo/2016/11/21/15/06/star-1840580_1280.jpg') center/cover;
  border-radius: 1px;
  display:-moz-inline-stack;
}

.popup button {
  background: hsl(210, 2%, 24%);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
    font-family: "Host Grotesk", sans-serif;
    font-size: large;
}

.popup button:hover {
  background: #7e7f81;
}