body {
  font-family: Arial, sans-serif;
  max-width: 2000;
  margin: 0;
  text-align: center;
}

header {
  background-color: #333;
  color: #fff;
  padding: 30px;
  font-size: 20px;
}

header a {
  margin-right: 36px; /* Increase the margin between each link by 20 pixels */
}

header div {
  margin-right: 36px; /* Increase the margin between each div element by 20 pixels */
}

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

nav li {
  display: inline-block;
  margin-right: 10px;
}

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

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

main {
  max-width: 2000px;
  margin: 0 auto;
  padding: 20px;
}

h1 {
  font-size: 56px;
  margin-top: 0;
}

.tabs {
  margin-top: 20px;
}

.tabs ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tabs li {
  display: inline-block;
  margin-right: 20px;
}

.tabs a {
  display: block;
  padding: 10px;
  background-color: #eee;
  color: #333;
  text-decoration: none;
}

.tabs a:hover {
  background-color: #ccc;
}