body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f2f2f2;
}

header {
  background-color: #333;
  color: #fff;
  padding: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 {
  margin: 0;
}

header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}

header nav li {
  margin-right: 20px;
}

header nav a {
  color: #fff;
  text-decoration: none;
}

main {
  padding: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

section {
  width: 30%;
  background-color: #fff;
  padding: 20px;
  margin-bottom: 20px;
}

footer {
  background-color: #333;
  color: #fff;
  padding: 20px;
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
}

label, input, textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 20px;
  font-size: 16px;
  box-sizing: border-box;
}

input[type="submit"] {
  background-color: #333;
  color: #fff;
  padding: 10px 20px;
  border: none;
  cursor: pointer;
}

input[type="submit"]:hover {
  background-color: #fff;
  color: #333;
}