body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background: #f5f5f5;
  color: #333;
}
header {
  text-align: center;
  margin-bottom: 20px;
}
.logo {
  max-width: 200px;
}
.tabs {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}
.tab-button {
  padding: 10px 20px;
  border: none;
  background: #eee;
  cursor: pointer;
  margin: 0 5px;
  border-radius: 4px;
}
.tab-button.active {
  background: #333;
  color: #fff;
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}
ul {
  list-style: none;
  padding: 0;
}
li {
  margin: 10px 0;
}
a {
  text-decoration: none;
  color: #0066cc;
}
a:hover {
  text-decoration: underline;
}
.note {
  font-size: 0.9em;
  color: #555;
}