body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f5f5f5;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
#container {
  background: #fff;
  padding: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  text-align: center;
}
.folder-button {
  display: inline-block;
  margin: 20px;
  padding: 20px;
  font-size: 18px;
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
}
.folder-button img {
  width: 64px;
  height: 64px;
  display: block;
  margin: 0 auto 10px;
}