body {
  font-family: Arial, sans-serif;
}

.container {
  max-width: 400px;
  margin: 50px auto;
  padding: 20px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
}

.form-group input[type="text"] {
  width: 100%;
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 3px;
}

.form-group input[type="submit"] {
  background-color: #25D366;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 3px;
  cursor: pointer;
}

.form-group input[type="submit"]:hover {
  background-color: #128C7E;
}