html,
body {
  background: black;
  font-family: sans-serif;
}

#page {
  position: relative;
  width: 1440px;
  margin: 40px auto;
}

#game {
  background: #7a7a7a;
  display: block;
}

#startBtn {
  position: absolute;
  top: 364px;
  left: 700px;
  z-index: 10;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

#instructions {
  position: absolute;
  right: -125px;
  top: 40px;
  color: #ddd;
  font-size: 14px;
  display: none;
}

#safeOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 20;
}

#safeWindow {
  background: #bcbcbc;
  padding: 20px;
  width: 480px;
  text-align: center;
  border-radius: 6px;
}

#safeText {
  font-size: 14px;
  margin-bottom: 10px;
}

#safeInput {
  padding: 8px;
  font-size: 14px;
}

#cardImage {
  margin-top: 15px;
  display: none;
  width: 100%;
}