How can I animate the dropdown in my primary nav?

Question

(JSFiddle for context: https://jsfiddle.net/25ghjzr0/4/)

I have a dropdown menu in my primary nav, which appears when you hover a link. But I can't figure out how to animate it. I want to have it gradually go from height 0% to 100% smoothly, and then reverses on hover out. It also needs to work with :focus-within.

My code:

@import url("https://fonts.googleapis.com/css2?family=Poppins&display=swap");
* {
  font-family: "Poppins", sans-serif;
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle, #001eff 0%, #10009d 100%);
}

main {
  min-height: 100vh;
}

a {
  text-decoration: none;
}

.sr-only {
  display: none;
}

.flex {
  display: flex;
  gap: 3rem;
}


/* primary nav */

.primary-header {
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.4);
}

.primary-navigation {
  list-style: none;
  padding: 3rem;
  overflow-y: scroll;
}

.primary-navigation a {
  color: #ffffff;
  text-decoration: none;
  font-size: 1.5rem;
  transition: all 300ms ease-in-out;
  list-style: none;
}

.primary-navigation a:hover {
  color: #929292;
}

.mobile-nav-toggle {
  display: none;
}

.primary-navigation[data-visible="false"] {
  overflow-y: hidden;
}

body:has(.primary-navigation[data-visible="true"]) {
  overflow-y: hidden;
}

.primary-header .logo {
  width: 8rem;
  margin-left: 2rem;
}

@media screen and (max-width: 50rem) {
  .primary-navigation {
    gap: 2rem;
    position: fixed;
    z-index: 1000;
    inset: 0;
    padding: 10rem 3rem;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 300ms ease-in-out;
    margin: 0;
    backdrop-filter: blur(1rem);
    background: rgba(0, 0, 0, 0.4);
  }
  .primary-navigation a {
    font-size: 1.75rem;
  }
  .primary-navigation[data-visible="true"] {
    transform: translateX(0%);
  }
  .primary-header .mobile-nav-toggle {
    display: block;
    position: absolute;
    z-index: 9999;
    background-image: url("./assets/hamburger.svg");
    background-color: transparent;
    background-size: cover;
    background-repeat: no-repeat;
    width: 3rem;
    border: 0;
    aspect-ratio: 1;
    right: 3rem;
    transition: opacity 300ms ease-in-out;
  }
  .primary-header .mobile-nav-toggle[aria-expanded="true"] {
    background-image: url(./assets/close.svg);
    position: fixed;
  }
  .primary-header .mobile-nav-toggle:hover {
    opacity: 0.5;
  }
  .primary-header .logo {
    margin: 2rem;
  }
}


/* primary nav dropdown */

.dropdown-content {
  display: none;
  position: absolute;
  padding-left: 0;
  background: rgba(0, 0, 0, 0.5);
  box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
  z-index: 1;
  list-style: none;
  border-radius: 1rem;
}

.dropdown-content a {
  display: flex;
  padding: 1rem;
  color: #ffffff;
  border-radius: 1rem;
}

.dropdown-content a:hover {
  background: rgba(0, 0, 0, 0.4);
  color: #929292;
}

.dropdown:hover .dropdown-content {
  display: flex;
  flex-direction: column;
}

@media screen and (max-width: 50rem) {
  .dropdown-content {
    display: block;
    position: relative;
    margin: 2rem 1rem 0;
    background: transparent;
  }
}

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <link rel="stylesheet" href="style.css" />
  <link rel="shortcut icon" href="./assets/favicon.svg" type="image/x-icon" />
  <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD@48,400,0,0" />
  <script src="script.js" defer></script>
  <script src="https://kit.fontawesome.com/b6395b8284.js" crossorigin="anonymous"></script>
  <title>Unit 01</title>
</head>

<body>
  <header class="primary-header flex">
    <img src="./assets/favicon.svg" class="logo" />
    <button class="mobile-nav-toggle" aria-controls="primary-navigation" aria-expanded="false">
      <span class="sr-only">Menu</span>
    </button>
    <nav>
      <ul data-visible="false" class="primary-navigation flex">
        <li><a href="index.html">Home</a></li>

        <li class="dropdown">
          <a href="about.html" class="dropbtn">About Me</a>
          <ul class="dropdown-content">
            <li><a href="projects.html">My Projects</a></li>
            <li><a href="college.html">My College Work</a></li>
            <li><a href="cv.html">My CV</a></li>
            <li><a href="photos.html">My Photography</a></li>
          </ul>
        </li>
        <a href="contact.html" class="dropbtn">Contact Me</a>
        </li>
      </ul>
    </nav>
  </header>
</body>

</html>

My question was associated with this one, however I've already tried this solution and couldn't make it work.

How can I animate the dropdown in my primary nav?

0 Answers0