body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #ffffff;
  color: #333;
  transition: background 0.3s, color 0.3s;
}

header {
  background: #000000;
  color: white;
  padding: 1rem;
  text-align: center;
}
nav {
	font-family: Arial, sans-serif;
	font-size: 1.3rem;
	margin: 0 3rem;
	padding: 1rem 0;
	background: #ffffff;
	color: #333;
	font-weight: bold;
	transition: background 0.3s, color 0.3s;
	text-align: right;
}

main {
  padding: 2rem;
}

section {
  margin-bottom: 2rem;
}

footer {
  background: #000000;
  color: white;
  text-align: center;
  padding: 1rem;
}

.dark-mode {
  background: #000000;
  color: #eee;
}

.dark-mode nav {
	background:#000000;
}
.dark-mode header,
.dark-mode footer {
  background: #000000;
}