JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
  
  <div class="bgform-2 popover fade bottom in">
     <div class="arrow"></div>
     <h3 class="popover-title">Titulo 1</h3>
    <div class="popover-content">
      <form>
         <fieldset>
         <legend>Form</legend>
         <label>Nome: </label><input type="text" placeholder="digite seu nome completo"/>
         	<input type="submit" value="Enviar" />	
         </fieldset>
      </form>
    </div>
 </div>
<button type="submit" id="btn">
							Enviar
</button>

CSS

.popover {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1060;
  display: none;
  max-width: 276px;
  padding: 1px;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-style: normal;
  font-weight: normal;
  line-height: 1.42857143;
  text-align: left;
  text-align: start;
  text-decoration: none;
  text-shadow: none;
  text-transform: none;
  letter-spacing: normal;
  word-break: normal;
  word-spacing: normal;
  word-wrap: normal;
  white-space: normal;
  background-color: #fff;
  -webkit-background-clip: padding-box;
          background-clip: padding-box;
  border: 1px solid #ccc;
  border: 1px solid rgba(0, 0, 0, .2);
  border-radius: 6px;
  -webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
          box-shadow: 0 5px 10px rgba(0, 0, 0, .2);

  line-break: auto;
}

.popover.bottom {
  margin-top: 10px;
}

.popover-title {
  padding: 8px 14px;
  margin: 0;
  font-size: 14px;
  background-color: #f7f7f7;
  border-bottom: 1px solid #ebebeb;
  border-radius: 5px 5px 0 0;
}
.popover-content {
  padding: 9px 14px;
}
.popover > .arrow,
.popover > .arrow:after {
  position: absolute;
  display: block;
  width: 0;
  height: 0;
  border-color: transparent;
  border-style: solid;
}
.popover > .arrow {
  border-width: 11px;
}
.popover > .arrow:after {
  content: "";
  border-width: 10px;
}
.popover.top > .arrow {
  bottom: -11px;
  left: 50%;
  margin-left: -11px;
  border-top-color: #999;
  border-top-color: rgba(0, 0, 0, .25);
  border-bottom-width: 0;
}
.popover.top > .arrow:after {
  bottom: 1px;
  margin-left: -10px;
  content: " ";
  border-top-color: #fff;
  border-bottom-width: 0;
}

.popover.bottom > .arrow {
  top: -11px;
  left: 50%;
  margin-left: -11px;
  border-top-width: 0;
  border-bottom-color: #999;
  border-bottom-color: rgba(0, 0, 0, .25);
}
.popover.bottom > .arrow:after {
  top: 1px;
  margin-left: -10px;
  content: " ";
  border-top-width: 0;
  border-bottom-color: #fff;
}

JavaScript

$("#btn").click(function(){
			$('.popover').toggle(250);
		})