/* Use full viewport and center with Flexbox */
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center; /* center horizontally */
  align-items: center;     /* center vertically */
  background-color: #f0f2f5;
  font-family: Arial, sans-serif;
}

/* Container box styling */
.container {
  width: 400px;
  padding: 30px;
  background-color: #ffffff;
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

/* Heading */
.container h1 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}

/* Labels */
.container label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
  color: #555;
}

/* Inputs, selects, textarea */
.container input[type="text"],
.container select,
.container textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 5px;
  box-sizing: border-box;
}

/* Submit button */
.container input[type="submit"] {
  width: 100%;
  padding: 12px;
  background-color: #007BFF;
  border: none;
  color: #fff;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
}

.container input[type="submit"]:hover {
  background-color: #0056b3;
}