Mobile navbar menu

saluation, je cherche a ajouter barre de navigation ( mes connaissances en js sont tres basiques )

<!-- START Navbar -->
    <section class="navbar">
      <div class="title">
        <a class="logo" href="#">Swilam<span>DE</span></a>
        <span><i id="nav-menu" class="fas fa-bars"></i></span>
      </div>
      <nav>
        <i id="nav-exit" class="fas fa-times"></i>
        <div class="home">
          <ul>
            <li><a href="#">Home</a></li>
            <li><a href="#">Features</a></li>
            <li><a href="#">Pricing</a></li>
          </ul>
        </div>
        <div class="contact">
          <ul>
            <li><a href="#">Contact</a></li>
            <li><a class="premium" href="#">Go Premium</a></li>
          </ul>
        </div>
      </nav>
    </section>
    <!-- End Navbar -->

    /*
=============== 
NAVBAR
===============
*/
.navbar {
  background: var(--white);
  padding: 10px;
}
.logo {
  font-weight: bold;
  font-size: 1.4em;
  color: var(--black);
}
.logo span {
  color: var(--primary-500);
}
.title {
  display: flex;
  place-content: space-between;
}
#nav-menu {
  margin-top: 5px;
  font-size: 1.4em;
  font-weight: bold;
  cursor: pointer;
  display: block;
}
nav {
  position: fixed;
  z-index: 99;
  width: 66%;
  right: 0;
  top: 0;
  background: var(--primary-600);
  height: 100vh;
  padding: 1em;
}
nav.menu-btn {
  display: block;
}
.home {
  margin-top: 3em;
  margin-bottom: -100px;
}
nav a {
  color: var(--white);
  display: block;
  padding: 0.5em;
  font-size: 1.4em;
  text-align: right;
}
nav a:hover {
  font-weight: bold;
}
#nav-exit {
  display: block;
  float: right;
  margin: 0.5em;
  cursor: pointer;
  font-size: 1.4em;
}

const mobileBtn = document.getElementById("nav-menu");
nav = document.querySelector("nav");
mobileBtnExit = document.getElementById("nav-exit");

mobileBtn.addEventListener("click", () => {
  nav.classList.add("menu-btn");
});

mobileBtnExit.addEventListener("click", () => {
  nav.classList.remove("menu-btn");
});

Ce que je veux

une barre de naigation classique

Ce que j'obtiens

rien ne marche a vrai dire