body {
  margin: 0;
  font-family: 'Tahoma', sans-serif;
  background-color: #f5f5f5;
  direction: rtl;
}

.sidebar {
  width: 200px;
  background-color: #2c3e50;
  color: white;
  height: 100vh;
  position: fixed;
  padding: 20px;
}

.sidebar h2 {
  margin-bottom: 20px;
}

.sidebar ul {
  list-style: none;
  padding: 0;
}

.sidebar li {
  margin: 15px 0;
  cursor: pointer;
}

.sidebar li:hover {
  background-color: #e0e0e0;
  border-radius: 5px;
  color: #2c3e50;
  padding: 5px;
  /*cursor: pointer;*/
}

.main {
  margin-right: 220px;
  padding: 30px;
}

.btn-new-device {
  display: inline-block;
  padding: 8px 16px;
  background-color: #007bff;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-size: 16px;
  transition: background-color 0.3s;
}
.btn-new-device:hover {
  background-color: #0056b3;
}