/* Set the font family and size for the entire page */
body {
  font-family: Arial, sans-serif;
  font-size: 16px;
}

/* Set the style for the header */
header {
  background-color: #333;
  color: #fff;
  padding: 20px;
}

/* Style for the navigation menu */
nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: space-between;
}

nav li {
  margin-right: 20px;
}

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  text-transform: uppercase;
}

/* Style for the main content area */
main {
  padding: 20px;
}

h1, h2, h3 {
  margin-top: 0;
}

/* Style for the form */
form label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

form input[type="text"],
form input[type="datetime-local"],
form input[type="number"],
form input[type="submit"],
form input[type="checkbox"] {
  padding: 5px;
  border-radius: 3px;
  border: none;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
  margin-bottom: 10px;
}

form input[type="submit"] {
  background-color: #333;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

form input[type="submit"]:hover {
  background-color: #222;
}

form input[type="checkbox"] {
  display: inline-block;
  margin-right: 10px;
}

/* Style for success and error messages */
.success-message {
  background-color: #d4edda;
  color: #155724;
  padding: 10px;
  margin-bottom: 20px;
  border-radius: 3px;
}

.error-message {
  background-color: #f8d7da;
  color: #721c24;
  padding: 10px;
  margin-bottom: 20px;
  border-radius: 3px;
}