body {
  margin: 0;
  font-family: sans-serif;
}

.navbar {
  background-image: url(../img/haikei1.jpg);
  position: relative;
  z-index: 1000;
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: row;
}

.menu li {
  position: relative;
}

.menu a {
  display: block;
  color: rgb(32, 57, 44);
  padding: 14px 10px ;
  text-decoration: none;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-image: url(../img/haikei1.jpg);
  min-width: 160px;
  z-index: 1;
  list-style: none;
}

.dropdown-content.open {
  display: block;
}


.hamburger {
  display: none;
  font-size: 24px;
  padding: 14px 20px;
  color: rgb(32, 57, 44);
  cursor: pointer;
}

.menu-toggle {
  display: none;
}

@media screen and (max-width: 1000px) {
  
  .dropdown-content {
    position: static;
    width: 100%;
  }

  .navbar {
    width: 100%;
    overflow: hidden;
    background-image: url(../img/haikei1.jpg);
    position: relative;
    z-index: 1000;
  }
  
  .menu {
    display: none;
    flex-direction: column;
  }

  .menu-toggle:checked + .hamburger + .menu {
    display: flex;
  }

  .hamburger {
    display: block;
    width: 100%;
    background-image: url(../img/haikei1.jpg);
  }

  .dropdown-content {
    display: none;
  }

  .dropdown-content.open {
    display: block;
  }

  .dropdown > .dropdown-toggle {
    display: inline-block;
    width: 100%; /* 必要に応じて */
  }
  .dropdown-content {
    position: absolute;
    top: 100%; /* 親要素の下に固定 */
  }

  .dropdown-content.open {
    display: block;
  }

}