I need to create a menu with 3 buttons that when clicked, it opens a div on the side of the menu. The 3 buttons open the same div. I was able to create this without a problem. The actual problem I have is when I want to hide the div. I only want to hide the div when you click on a button that has .open as a class, so I can't use .toggle()... Am I even doing this right?
Here's a JSFiddle: https://jsfiddle.net/5duh8v71/3/
$('.btn').click(function() {
  var obj = $(this);
  if ($('.btn').hasClass('open')) {
    $('.btn').removeClass('open');
  }
  if (obj.hasClass('open')) {
    obj.removeClass('open');
  } else {
    obj.addClass('open');
  }
  $(".hidden-content").show("slide");
});
//This is what I tought would solve my problem...     
$('.btn.open').click(function() {
  var obj = $(this);
  obj.removeClass('open');
  $(".hidden-content").hide("slide");
});.container {
  display: flex;
}
.menu {
  width: 50%;
}
.btn {
  background-color: #1f2227;
  padding: 10px;
  margin: 5px;
  border-radius: 5px;
  color: #ffffff;
  cursor: pointer;
  &:hover {
    background-color: #0f1113;
  }
  &.open {
    background-color: #0f1113;
  }
}
.hidden-content {
  padding: 10px;
  border: 1px solid #0f1113;
  border-radius: 5px;
  width: 50%;
  margin: 5px;
  display: none;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container">
  <div class="menu">
    <div class="btn">CLICK</div>
    <div class="btn">CLICK</div>
    <div class="btn">CLICK</div>
  </div>
  <div class="hidden-content">
    <h1>Content</h1>
  </div>
</div> 
     
    