body {
  background-image: url("IMG/scanlines.png");
  background-color: green;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  box-shadow: 0 0 200px rgba(0, 0, 0, 0.9) inset;
}

.container {
  width: 90%;
  max-width: 1000px;
  padding: 20px;
  color: #4af626;
  font-size: 1rem;
  text-shadow: 1px 1px 2px greenyellow, greenyellow, greenyellow;
  font-family: 'Fira Mono', monospace;
}

#audioButton {
  background-color: greenyellow;
  font-size: 1rem;
  position: absolute;
  top: 10px;
  right: 10px;
  width: 75px;
  height: 25px;
  outline: none;
  cursor: pointer;
}

.btn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-top: 20px;
}

.btn {
  cursor: pointer;
  border: 2.75px solid black;
  background-color: transparent;
  color: #4af626;
  font-size: 1rem;
  font-family: 'Fira Mono', monospace;
}

.btn:hover {
  color: black;
  background-color: rgba(74, 246, 38, 0.4);
}

@media only screen and (min-width: 768px) {
  .container {
    font-size: 1.2rem;
  }
}