body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background: #f7f7f7;
}
.step {
  display: none;
  padding: 20px;
  max-width: 500px;
  margin: 0 auto;
  background: #fff;
  border-radius: 8px;
  margin-top: 40px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.step.active {
  display: block;
}

label {
  display: block;
  margin-top: 15px;
  font-weight: bold;
}

input {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  margin-top: 20px;
  padding: 12px 20px;
  width: 100%;
  background: black;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
}