body {
  font-family: 'Roboto', Arial, sans-serif;
  line-height: 1.6;
  background: #f7f5f2;
  margin: 0;
  padding: 0;
}
header {
  background: #2796E5;
  color: #fff;
  padding: 1.5em 0 1em 0;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
main {
  max-width: 700px;
  margin: 2em auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(121,5,5,0.08);
  padding: 2em 2.5em;
}
h1, h2 {
  font-weight: 700;
}
ul {
  padding-left: 1.5em;
  margin-bottom: 1.5em;
}
li {
  margin-bottom: 0.5em;
  list-style-type: disc;
}
footer {
  text-align: center;
  color: #fff;
  background: #222;
  padding: 1em 0;
  margin-top: 2em;
  font-size: 0.95em;
}
nav {
  margin-bottom: 2em;
  text-align: center;
  background: #92E5B3;
  padding: 0.5em 0;
  border-radius: 0 0 10px 10px;
}
nav a {
  color: #2796E5;
  text-decoration: none;
  font-weight: 700;
  margin: 0 1em;
  transition: color 0.2s;
  padding: 0.2em 0.5em;
  border-radius: 4px;
}
nav a:hover {
  color: #fff;
  background: #2796E5;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
}
th, td {
  border: 1px solid #ddd;
  padding: 0.5em 0.8em;
  text-align: left;
}
th {
  background: #E5E419;
  color: #222;
}
tr:nth-child(even) td {
  background: #f7fbe5;
}
section {
  margin-bottom: 2em;
}
/* Highlight About section with #92E5B3 */
#about {
  background: #92E5B3;
  border-radius: 8px;
  padding: 1em 1.5em;
  margin-bottom: 2em;
}