body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 20px;
  background-color: Canvas;
  color: CanvasText;
}

#alive-button {
  padding: 10px 20px;
  font-size: 18px;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  display: block;
  margin: 0 auto 20px;
  width: 100%;
  height: 100px;
  transition: background-color 0.1s linear;
}

#alive-button:hover {
  opacity: 0.9;
}

#user-list {
  margin-top: 20px;
  text-align: left;
  display: inline-block;
  font-size: 1.2em;
}

@media (max-width: 600px) {
  #alive-button {
    width: 100%;
    height: 50svh;
    max-height: 50svh;
    font-size: 24px;
    padding: 20px;
  }
}