JSFiddle - React, Tailwind, and code Playground

HTML

<div class="member_btn"> <span>Login</span>

  <form class="member_block">
    <input type="text">
    <input type="password">
    <input type="submit">
  </form>

</div>

CSS

.member_btn {
  position: relative;
  height: 60px;
  width: 50px;
  margin: 30px;
}

.member_btn > span {
  cursor: pointer;
}

.member_block {
  box-shadow: 0 0 1px;
  padding: 10px;
  position: absolute;
  left: 0px;
  top: 30px;
  z-index: 9999;
  display: none;
}

JavaScript

$('.member_btn').on('mouseenter', function() {
  $('.member_block', this).show(300);
}).on('mouseleave', function(e) {
  if (!$(e.target).is('input')) {
    $('.member_block', this).hide(300);
  }
});