Dropdown Menu

<div class="dd-wrap">
  <button class="dd-trigger" id="dd-btn">Options</button>
  <div class="dd-menu" id="dd-menu">
    <a href="javascript:void(0)" class="dd-item">Edit</a>
    <a href="javascript:void(0)" class="dd-item">Duplicate</a>
    <a href="javascript:void(0)" class="dd-item">Archive</a>
    <div class="dd-sep"></div>
    <a href="javascript:void(0)" class="dd-item dd-danger">Delete</a>
  </div>
</div>

.dd-wrap { position: relative; display: inline-block; }
.dd-trigger {
  padding: 8px 18px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  color: #1a1a1a;
}
.dd-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  width: 160px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 10px;
  padding: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,.08);
  opacity: 0;
  transform: translateY(-6px) scale(.97);
  pointer-events: none;
  transition: all .2s cubic-bezier(.16,1,.3,1);
  z-index: 10;
}
.dd-menu.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.dd-item {
  display: block;
  padding: 8px 12px;
  font-size: 13px;
  color: #333;
  text-decoration: none;
  border-radius: 6px;
  transition: background .15s;
}
.dd-item:hover { background: #f5f5f5; }
.dd-danger { color: #dc2626; }
.dd-danger:hover { background: #fef2f2; }
.dd-sep {
  height: 1px;
  background: #f0f0f0;
  margin: 4px 0;
}

const btn = document.getElementById('dd-btn');
const menu = document.getElementById('dd-menu');
btn.addEventListener('click', (e) => {
  e.stopPropagation();
  menu.classList.toggle('open');
});
document.addEventListener('click', () => {
  menu.classList.remove('open');
});