body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

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

header h1 {
  margin: 0;
}

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

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

header nav a {
  color: #fff;
  text-decoration: none;
}
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

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

header h1 {
  margin: 0;
}

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

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

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