* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #0b0b0b;
  color: #ffffff;
  line-height: 1.75;
}

header, main, footer {
  max-width: 1150px;
  margin: auto;
  padding: 20px;
}

nav {
  margin-bottom: 20px;
}

nav a {
  margin-right: 15px;
  color: #f5c400;
  text-decoration: none;
  font-weight: bold;
}

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

h1, h2, h3 {
  color: #f5c400;
}

section {
  margin-bottom: 45px;
}

ul {
  padding-left: 20px;
}

footer {
  border-top: 1px solid #222;
  font-size: 14px;
  color: #ccc;
}