Ways to expand the width of a div on hover - Angular navbar dropdown utilizing Bootstrap 4

I am attempting to make the div full width while also implementing a slideDown/Up effect. I am struggling to identify the specific CSS needed to adjust the width accordingly.

Currently, this is what I have:

I can see that the class open is dynamically added to the div when hovered over. However, I am unsure how to set the div to full width.

$(".dropdown").hover(
  function() {
    $('.dropdown-menu', this).not('.in .dropdown-menu').stop(true, true).slideDown("400");
    $(this).toggleClass('open');
  },
  function() {
    $('.dropdown-menu', this).not('.in .dropdown-menu').stop(true, true).slideUp("400");
    $(this).toggleClass('open');
  }
);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<nav class="navbar navbar-expand-md bg-dark navbar-dark fixed-top">
  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
  <a class="navbar-brand" href="#">Navbar</a>
  <div class="collapse navbar-collapse" id="navbarNavDropdown">
    <div class="navbar-nav">
      <div class="nav-item dropdown dropdown-slide dropdown-hover">
        <a class="nav-link dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">slide down to see</a>
        <div class="dropdown-menu row" aria-labelledby="navbarDropdownMenuLink">
          <a class="dropdown-item" href="#">First Item</a>
          <a class="dropdown-item" href="#">Second One</a>
          <a class="dropdown-item" href="#">The last but not the least</a>
        </div>
      </div>
    </div>
  </div>
</nav>

Is there a way to achieve the same effect using only CSS without relying on jQuery?

I've searched various threads on Stack Overflow for CSS solutions but haven't found exactly what I'm looking for.

Thank you!

csstwitter-bootstrapbootstrap-4

Answer №1

Need help making it fullwidth?

I've introduced a new class called fullwidth to the dropdown and made some adjustments to certain properties. Hopefully, this solution works for you :)

$(".dropdown").hover(
  function() {
    $('.dropdown-menu', this).not('.in .dropdown-menu').stop(true, true).slideDown("400");
    $(this).toggleClass('open');
  },
  function() {
    $('.dropdown-menu', this).not('.in .dropdown-menu').stop(true, true).slideUp("400");
    $(this).toggleClass('open');
  }
);
.fullwidth.dropdown {
  position: static;
}

.fullwidth .dropdown-menu {
  right: 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<nav class="navbar navbar-expand-md bg-dark navbar-dark fixed-top">
  <button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
  <a class="navbar-brand" href="#">Navbar</a>
  <div class="collapse navbar-collapse" id="navbarNavDropdown">
    <div class="navbar-nav">
      <div class="nav-item dropdown dropdown-slide dropdown-hover fullwidth">
        <a class="nav-link dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">slide down to see</a>
        <div class="dropdown-menu row" aria-labelledby="navbarDropdownMenuLink">
          <a class="dropdown-item" href="#">First Item</a>
          <a class="dropdown-item" href="#">Second One</a>
          <a class="dropdown-item" href="#">The last but not the least</a>
        </div>
      </div>
    </div>
  </div>
</nav>

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