body {
  background-color: #F7F7F7;
  font-family: Arial, sans-serif;
  color: #333333;
  margin: 0;
}

header {
  background-color: #4B0082;
  color: #FFFFFF;
  padding: 1rem;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-weight: bold;
  font-size: 1.5rem;
  color: #FFFFFF;
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
}

nav ul li {
  margin-right: 1rem;
}

nav ul li a {
  color: #FFFFFF;
  text-decoration: none;
  font-size: 1.1rem;
}

nav ul li a:hover {
  text-decoration: underline;
}

main {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
}

section {
  margin-bottom: 2rem;
}

h1, h2, h3 {
  font-weight: bold;
}

a {
  color: #4B0082;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button {
  background-color: #4B0082;
  color: #FFFFFF;
  border: none;
  padding: 0.5rem 1rem;
  font-size: 1.1rem;
  cursor: pointer;
  margin-top: 1rem;
}

button:hover {
  background-color: #6A5ACD;
}