/* Basic page style */
body {
  font-family: Arial, sans-serif;
  font-size: 1rem;
  color: #222222;
  background-color: #f2f2f2;
  margin: 0;
  text-align: left;
}

/* Header and navigation */
header {
  background-color: #003366;
  color: white;
  padding: 1rem;
  text-align: center;
}

nav {
  background-color: #dddddd;
  padding: 0.8rem;
  margin: 1rem 0;
  border: 1px solid #999999;
}

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

nav li {
  display: inline;
  margin-right: 1rem;
}

/* General link style */
a {
  color: #0033cc;
}

/* Descendant selector for navigation links */
nav a {
  text-decoration: none;
  color: #003366;
  font-weight: bold;
}

nav a[aria-current="page"] {
  color: #990000;
}

/* Main content */
main {
  width: 80vw;
  margin: 1rem auto;
  padding: 1rem;
  background-color: white;
  border: 1px solid #cccccc;
}

/* Element selectors */
h1 {
  font-size: 2rem;
  text-transform: capitalize;
  text-shadow: 1px 1px 2px gray;
}

h2 {
  font-size: 1.5rem;
  font-weight: bold;
  text-transform: uppercase;
}

p {
  margin: 0.8rem 0;
  font-style: normal;
}

ul {
  list-style-type: square;
  list-style-position: outside;
}

ol {
  list-style-type: decimal;
  list-style-position: inside;
}

dl {
  margin: 1rem 0;
  padding: 0.5rem;
  border: 1px solid #cccccc;
}

/* Box model for sections/articles */
section,
article {
  width: 100%;
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid #cccccc;
  background-color: #ffffff;
  box-sizing: border-box;
}

/* Class selector */
.highlight {
  background-color: yellow;
  font-style: italic;
  font-weight: bold;
}

/* ID selector */
#intro {
  background-color: #eef5ff;
}

/* Footer */
footer {
  background-color: #003366;
  color: white;
  text-align: center;
  padding: 0.8rem;
  margin-top: 1rem;
}