CSS / HTML：下拉菜单和动画菜单图标出现问题

Question

我正在尝试创建一个带有动画菜单图标的导航栏。想法是在单击菜单图标时对其进行转换，同时应显示下拉菜单。问题是我无法同时使这两件事同时起作用（仅当您单击某些位置时才起作用）。

<script>
/* When the user clicks on the button, 
toggle between hiding and showing the dropdown content */
function myFunction(x) {
  document.getElementById("myDropdown").classList.toggle("show");
  x.classList.toggle("change"); /* ANIMATION*/
}

// Close the dropdown if the user clicks outside of it
window.onclick = function(event) {
  if (!event.target.matches('.dropbtn')) {
    var dropdowns = document.getElementsByClassName("dropdown-content");
    var i;
    for (i = 0; i < dropdowns.length; i++) {
      var openDropdown = dropdowns[i];
      if (openDropdown.classList.contains('show')) {
        openDropdown.classList.remove('show');
      }
    }
  }
}
</script>

.bar1, .bar2, .bar3 {
  width: 35px;
  height: 5px;
  background-color: white;
  margin: 6px 0;
  transition: 0.4s;
}

/* Rotate first bar */
.change .bar1 {
  -webkit-transform: rotate(-45deg) translate(-9px, 6px) ;
  transform: rotate(-45deg) translate(-9px, 6px) ;
}

/* Fade out the second bar */
.change .bar2 {
  opacity: 0;
}

/* Rotate last bar */
.change .bar3 {
  -webkit-transform: rotate(45deg) translate(-8px, -8px) ;
  transform: rotate(45deg) translate(-8px, -8px) ;
}

/* Navigation bar*/
.navbar {
  overflow: hidden;
  background-color: #555;
  border-radius: 2px;
  margin-left: 5px;
  margin-right: 5px;
}

.navbar .icon {
	display: none;
}

/* Container for menu icon */
.container {
  display: inline-block;
  cursor: pointer;
}

.dropbtn {
  display: inline-block;
  cursor: pointer;
  float: left;
  border: none;
  margin-left: 20px;
  margin-right: 5px;
  margin-top: 5px;
  margin-bottom: 5px;
}

.dropbtn:hover, .dropbtn:focus {
  background-color: #2980B9;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f1f1f1;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
}

.dropdown a:hover {background-color: #ddd;}

.show {display: block;}


.navbar a:hover, .dropdown:hover .dropbtn {
  background-color: #000;
}

.dropdown-content a:hover {
  background-color: #000;
}

<div class="navbar">
	<div class="dropdown">
		<div onclick="myFunction()" class="dropbtn">
			<div class="container" onclick="myFunction(this)">
				<div class="bar1"></div>
				<div class="bar2"></div>
				<div class="bar3"></div>
			</div>
		
			<div id="myDropdown" class="dropdown-content">
				<a href="main.html">Hem</a>
				<a href="oss.html">Om oss</a>
				<a href="formular.html">Kontakt</a>
			</div>
		</div>
	</div>
				
	<div class="sok">
		<form action="/action_page.php">
			<input type="text" placeholder="Sök...">
		</form>
	</div>
</div>