body {
  font-family: Arial, sans-serif;
  padding: 20px;
  background: #f4f4f4;
}
.container {
  max-width: 600px;
  margin: auto;
  background: #fff;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 0 10px #ccc;
}
input[type="text"], input[type="number"], select {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
}
button {
  padding: 10px 20px;
}
label {
  display: block;
  margin: 10px 0 5px;
}
#status {
  margin-top: 10px;
}
pre {
  background: #eee;
  padding: 10px;
  margin-top: 20px;
}