.sidebar {
  width: 150px;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  padding: 20px;
  overflow-y: auto;
  z-index: 1;
  padding-top: 50px;
}

.sidebar a {
  display: block;
  margin-bottom: 10px;
  text-decoration: none;
  color: #000;
}

.hamburger-menu {
  display: none;
  position: fixed;
  top: 20px;
  left: 20px;
  cursor: pointer;
  z-index: 999;
}

.hamburger-icon {
  width: 30px;
  height: 3px;
  background-color: #000;
  margin-bottom: 5px;
}

@media screen and (max-width: 800px) {
  .sidebar {
    display: none;
  }

  .hamburger-menu {
    display: block;
  }

  .sidebar.active {
    display: block;
    width: 50%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
  }
}