jQuery show on hover, hide when mouse moves away

Question

I have a div that I want to work similarly to a hamburger menu. When mouse hovers over #Nnav, .dd should appear and then disappear again when unhovering. I don't know what is missing, but the div is always visible (tried hiding it with CSS and then it always remained hidden). Here is my code so far:

HTML:

<div id="menu">
 <img class="Nmenu" id="Nnav" src="images/nav.png">
  <div class="Nmenu" id="dd">
   <div class="Nmenu" id="dropdown"></div>
    <a class="Nmenu buttons" id="B1" href="#">Page 1</a>
    <a class="Nmenu buttons" id="B2" href="#">Page 2</a>
    <a class="Nmenu buttons" id="B3" href="#">Page 3</a>
 </div> </div>

CSS:

#dd {display: none;}

jQuery:

$("#Nnav").on({
mouseover: function() {
    $("#dd").stop().show();
},
mouseout: function() {
    $("#dd").stop().hide();
} })

Answer 1

#dd {
    display: none;
}
#Nnav:hover + #dd {
    display: block;
}

<div id="menu">
    <img class="Nmenu" id="Nnav" src="https://via.placeholder.com/50">
    
    <div class="Nmenu" id="dd">
        <div class="Nmenu" id="dropdown"></div>
        <a class="Nmenu buttons" id="B1" href="#">Page 1</a>
        <a class="Nmenu buttons" id="B2" href="#">Page 2</a>
        <a class="Nmenu buttons" id="B3" href="#">Page 3</a>
    </div>
</div>

This isn't going to work as a menu toggler, though, since the menu disappears once you're off the image. You'd need the menu to be a child element:

#dd {
    display: none;
}

#Nnav {
    display: inline-block;
}

#Nnav:hover #dd {
    display: block;
}

<div id="Nnav">
    <img class="Nmenu" src="https://via.placeholder.com/50">

    <div class="Nmenu" id="dd">
        <div class="Nmenu" id="dropdown"></div>
        <a class="Nmenu buttons" id="B1" href="#">Page 1</a>
        <a class="Nmenu buttons" id="B2" href="#">Page 2</a>
        <a class="Nmenu buttons" id="B3" href="#">Page 3</a>
    </div>
</div>