body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 1rem;
  background: #efe;
}

header {
  background: #cec;
  padding: 1rem;
}

/* 1) Make the nav a flex container */
header nav {
  display: flex;
  align-items: center;  /* vertically center if links wrap or grow */
}

/* 2) Give every link a right margin for spacing */
header nav a {
  text-decoration: none;
  color: #333;
  margin-right: 1rem;   /* adjust this value to taste */
}

/* 3) Remove extra space after the last link */
header nav a:last-child {
  margin-right: 0;
}