* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #212529;
  background-color: #F8F9FA;
}

header {
  background-color: #2C7BE5;
  color: white;
  padding: 1rem;
}

nav a {
  color: white;
  margin-right: 1rem;
  text-decoration: none;
}

main {
  padding: 2rem;
}

section {
  margin-bottom: 3rem;
}

button {
  background-color: #2C7BE5;
  color: white;
  border: none;
  padding: 0.6rem 1rem;
  border-radius: 4px;
  cursor: pointer;
}

button:hover {
  background-color: #1a68d1;
}

label {
  display: block;
  margin-bottom: 1rem;
}

input, select, textarea {
  width: 100%;
  padding: 0.4rem;
  margin-top: 0.3rem;
}

#feedback {
  margin-top: 1rem;
  font-weight: bold;
}