JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<div class="add-defects-button">
  <div class="defects-button"><button>Кнопка 1</button></div>
  <div class="defects-forms">
    <div class="defects-forms-head">
      <span>Заголовок 1</span>
    </div>
      </div>
    </div>



<div class="add-defects-button">
  <div class="defects-button"><button>Кнопка 2</button></div>
  <div class="defects-forms">
    <div class="defects-forms-head">
      <span>Заголовок 2</span>
    </div>
      </div>
    </div>

CSS

.defects-button {

  margin-bottom: 100px;
  cursor: pointer;
  display: block;
  background: #64c9ca;
  -webkit-border-radius: 50%;
          border-radius: 50%;
  height: 20px;
  width: 20px; }
  .defects-button .material-icons {
    font-size: 17px;
    display: block;
    text-align: center;
    height: 20px;
    line-height: 20px;
    color: #fff;
    font-weight: bold; }

.defects-forms {
  display: none;
  opacity: 0;
  position: absolute;
  width: 250px;
  left: 51px;
  padding: 10px;
  -webkit-box-shadow: 0px 24px 59px 0px rgba(51, 59, 69, 0.15);
          box-shadow: 0px 24px 59px 0px rgba(51, 59, 69, 0.15);
  background: #fff;
  -webkit-border-radius: 10px;
          border-radius: 10px;
  margin-top: 5px;
  z-index: 999; }
  .defects-forms .textaria-form {
    height: 100px; }
    .defects-forms .textaria-form:focus {
      border: 1px solid #7dcfa8; }

.defects-forms-head {
  text-align: center;
  text-transform: uppercase;
  margin: 10px 0;
  color: #626262; }

.defects-forms-show {
  display: block;
  opacity: 1; }

JavaScript

$('.defects-button').click(function(){
	$('.add-defects-button .defects-forms').not(this).removeClass("defects-forms-show");
  $(this).parents('.add-defects-button').children('.defects-forms').addClass('defects-forms-show');
  return false;
});


$(document).click( function(event){

  $(".defects-forms").removeClass("defects-forms-show");
});