JSFiddle - React, Tailwind, and code Playground

HTML

<div class='input-box'>
  <input type='text'/>
  <div class='tooltip'>
    <div class='content'>
      <div class='row'>
        <span class='check'>
          +
        </span>
        <span>
          1 Capital Letter
        </span>
      </div>
      <div class='row'>
        <span class='check'>
          +
        </span>
        <span>
          1 Small Letter
        </span>
      </div>
      <div class='row'>
        <span class='check'>
          +
        </span>
        <span>
          8 Characters
        </span>
      </div>
    </div>
  </div>
</div>

CSS

body {
  font-family: arial;
  font-size: 14px;
  color: #363636;
}
.content {
  width: 90%;
  margin: 0 auto;
  height: 100%;
}
.input-box {
  position: relative;
  display: inline-block;
}
.tooltip {
  position: absolute;
  top: 100%;
  left: 0px;
  padding: 10px 0;
  background-color: white;
  opacity: 0;
  transition: opacity 0.2s ease;
  min-width: 100%;
}
input {
  outline: none;
  padding: 6px 7px;
  border: 1px solid #ddd;
  transition: border-color 0.2s ease;
  margin: 0;
}
input:focus {
  border: 1px solid teal;
  transition: border-color 0.2s ease;
}
input:focus ~.tooltip {
  opacity: 1;
  transition: opacity 0.2s ease;
}
.row {
  padding: 2px 0;
}
.check {
  color: brown;
  display: inline-block;
  transform: rotate(45deg) scale(1.4);
  -webkit-transform: rotate(45deg) scale(1.4);
}
.check.green {
  color: green;
  transition: color 0.3s ease;
  -webkit-transition: color 0.3s ease;
  transform: rotate(0);
  -webkit-transform: rotate(0);
}

JavaScript

$(function() {
	$('input').on('input', function() {
  	var length = $(this).val().length;
  	var tooltip = $(this).parent().children('.tooltip').first().children('.content').first();
    var check = '';
    if(length === 1) {
    	check = $(tooltip).children().first().children().first();
    } else if(length === 2) {
    	check = $(tooltip).children().eq(1).children().first();
    } else if(length === 3) {
    	check = $(tooltip).children().eq(2).children().first();
    }
    $(check).text('✔');
    $(check).addClass('green');
  });
});