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

li {
  display: inline;
}

nav ul {
  background-color: #333;
  padding: 10px 0;
  text-align: left;
}

nav li {
  margin: 0 20px;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 10px 15px;
  border-radius: 5px;
  transition: background-color 0.3s;
}

nav a:hover {
  background-color: #555;
}

body {
  background-color: #f5f5f5;
  color: #333;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 20px;
}

h1, h2 {
  color: #2c3e50;
  margin-top: 30px;
}

h1 {
  font-size: 2.5em;
  text-align: center;
  border-bottom: 3px solid #3498db;
  padding-bottom: 10px;
}

h2 {
  font-size: 1.8em;
  border-left: 4px solid #3498db;
  padding-left: 15px;
  background-color: #ecf0f1;
  padding: 10px 15px;
  border-radius: 5px;
}

a {
  color: #3498db;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:link {
  color: #3498db;
}

a:visited {
  color: #8e44ad;
}

a:hover {
  color: #2980b9;
  text-decoration: underline;
}

a:active {
  color: #e74c3c;
}

nav a:link {
  color: white;
}

nav a:visited {
  color: #a344c0;
}

nav a:hover {
  color: white;
  background-color: #555;
  text-decoration: none;
}

nav a:active {
  color: #e74c3c;
  background-color: #666;
}

ol {
  list-style-type: decimal;
  margin: 20px 0;
  padding-left: 30px;
}

ol li {
  display: list-item;
  margin: 10px 0;
}

ul {
  list-style-type: disc;
  margin: 20px 0;
  padding-left: 25px;
}

ul li {
  display: list-item;
  margin: 10px 0;
}

dl {
  margin: 20px 0;
}

dt {
  display: inline;
  font-weight: bold;
  margin-right: 10px;
}

dd {
  display: inline;
  margin: 0;
  margin-right: 20px;
}