body {
  font-family: "Roboto", sans-serif;
  background-color: #f7f7f7;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background-color: #fff;
  box-shadow: 0px 0px 20px rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  padding: 30px;
  text-align: center;
  max-width: 90%;
}

.header {
  text-align: center;
  margin-bottom: 20px;
}

h1 {
  font-size: 32px;
  margin-bottom: 20px;
  color: #333;
}

hr {
  border: none;
  border-top: 1px solid #ddd;
  margin: 20px auto;
  max-width: 80%;
}

input[type="text"] {
  width: calc(100% - 30px);
  padding: 15px;
  font-size: 18px;
  border: 2px solid #ccc;
  border-radius: 25px;
  outline: none;
  margin-bottom: 20px;
  transition: border-color 0.3s ease;
}

input[type="text"]:focus {
  border-color: #007bff;
}

.qrcode {
  margin: 20px auto;
  max-width: 200px;
}

button {
  background-color: #007bff;
  color: #fff;
  padding: 15px 30px;
  font-size: 18px;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  outline: none;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #0056b3;
}