How to position a popover in css

.container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
}

#products-list:popover-open {
  width: 200px;
  height: 100px;
  position: absolute;
  inset: unset;
  margin: 0;
}

.parent {
  position: relative;
}

<nav>
  <ul class="container">
    <li><a href="#">Home</a></li>
    <li><a href="#">About</a></li>
    <li>
      <div class="parent">
        <button class="trigger-btn" type="button" popovertarget="products-list">Products</button>
        <div id="products-list" popover>
          <ul>
            <li>Prod1</li>
            <li>Prod1</li>
            <li>Prod1</li>
          </ul>
        </div>
      </div>
    </li>
  </ul>
</nav>