body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
  background-color: #f0f0f0;
  width: 100%;
  height: 100%;
  position: fixed;
  overflow: hidden;
  -webkit-overflow-scrolling: touch;
}

#content {
  padding: 20px;
}

#installButton {
  display: none; /* Hidden by default */
  background-color: #317efb;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin: 20px auto;
}

#installButton:hover {
  background-color: #2661c7;
}

/* If you need scrolling in specific containers */
.scroll-container {
  height: 100%;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}