body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
}

header {
  background-color: #333;
  color: white;
  padding: 15px 20px;
  font-size: 1.5em;
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
}

.layout {
  display: flex;
  margin: 70px 20px 20px;
}

.sidebar-container {
  width: 250px;
  background: #f4f4f4;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: fixed;
  overflow-y: auto;
}

.content-container {
  flex-grow: 1;
  background: white;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  margin-left: 300px;
}

aside a {
  display: block;
  color: #333;
  text-decoration: none;
  margin-bottom: 10px;
  padding-left: 10px;
}

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

h2 {
  border-bottom: 1px solid #ccc;
  padding-bottom: 5px;
}

section {
  margin-bottom: 30px;
}