body {
  margin: 0;
  font-family: Arial;
  background: #f5f5f5;
}

header {
  background:#111;
  color:white;
  padding:15px;
  display:flex;
  justify-content:space-between;
}

.dashboard{
  display:flex;
}

.sidebar {
  width: 220px;
  background: #1e1e1e;
  height: 100vh;
  padding: 20px;
  color: white;
}

.sidebar a {
  display: block;
  color: white;
  text-decoration: none;
  padding: 10px;
  margin: 5px 0;
  background: #333;
  border-radius: 5px;
}

.sidebar a:hover {
  background: orange;
}

.main {
  flex: 1;
  padding: 30px;
}

.card{
  background:white;
  padding:20px;
  margin-bottom:20px;
  border-radius:10px;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid #ddd;
}

th {
  background: #222;
  color: white;
}

button {
  padding: 6px 12px;
  background: red;
  color: white;
  border: none;
  cursor: pointer;
}