/* Base styles */
body {
  font-family: Arial, sans-serif;
}

.container {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.sidebar {
  width: 250px;
  padding: 20px;
}

.main-content {
  flex-grow: 1;
  padding: 20px;
}

.banner img {
  width: 100%;
  height: auto;
}

.hamburger {
  display: none;
  font-size: 30px;
  background-color: transparent;
  border: none;
  cursor: pointer;
}

.nav-menu {
  display: flex;
  flex-direction: column;
}

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

.nav-menu li {
  margin: 15px 0;
}

.footer {
  text-align: center;
  padding: 20px;
  background-color: #f0f0f0;
}

@media (max-width: 768px) {

  /* Hide nav-menu by default on smaller screens */
  .nav-menu {
    display: none;
  }

  /* Show hamburger button */
  .hamburger {
    display: block;
    position: absolute;
    top: 20px;
    left: 20px;
  }

  /* Show the menu when activated */
  .nav-menu.active {
    display: block;
    position: absolute;
    background-color: white;
    width: 100%;
    left: 0;
    top: 50px;
    text-align: center;
  }

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

  .nav-menu li {
    margin: 15px 0;
  }

  .sidebar {
    width: 100%;
  }

  .main-content {
    padding-top: 60px;
  }
}