body {
  font-family: Arial, sans-serif;
  font-size: 1rem;
  background-color: #f4f4f4;
  color: #222222;
  margin: 0;
  padding: 0;
}

header {
  background-color: #2c3e50;
  padding: 1rem;
}

nav {
  background-color: #1f2d3a;
  padding: 0.75rem;
}

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

nav li {
  display: inline;
  margin: 0 1rem;
}

nav a {
  color: white;
  text-decoration: none;
}

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

h1 {
  font-size: 2rem;
  font-weight: bold;
  text-align: center;
  text-transform: capitalize;
  text-shadow: 0.1rem 0.1rem 0.2rem gray;
}

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

p {
  font-size: 1rem;
  text-align: left;
  font-style: normal;
}

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

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

dl {
  margin: 1rem 0;
}

a {
  color: #1a73e8;
}

main {
  width: 80%;
  margin: 1rem auto;
  padding: 1rem;
  border: 0.1rem solid #cccccc;
  background-color: white;
}

article,
section,
form,
figure {
  margin-bottom: 1rem;
  padding: 1rem;
  border: 0.1rem solid #dddddd;
}

img {
  max-width: 100%;
  height: auto;
}

figcaption {
  font-style: italic;
}

footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 1rem;
}

.highlight {
  color: #2c3e50;
  background-color: #d3dded;
  padding: 0.2rem;}

#intro {
  text-align: center;
  font-weight: bold;
  border-bottom: 0.15rem solid #2c3e50;
  padding-bottom: 0.5rem;
}