JSFiddle - React, Tailwind, and code Playground

HTML

<div class="group">      
      <input type="text" required>
      <span class="highlight"></span>
      <span class="bar"></span>
      <label>Name</label>
    </div>

CSS

body{
  padding: 80px 0px;
}

/* form starting stylings ------------------------------- */
.group 			  { 
  position:relative; 
  margin-bottom:45px; 
}
input 				{
  font-size:18px;
  padding:10px 10px 10px 5px;
  display:block;
  width:300px;
  border:none;
  border-bottom:1px solid #757575;
  background:transparent;
}
input:focus 		{ outline:none; }

/* LABEL ======================================= */
label 				 {
  color:#999; 
  font-size:18px;
  font-weight:normal;
  position:absolute;
  pointer-events:none;
  left:5px;
  top:10px;
  transition:0.2s ease all; 
  -moz-transition:0.2s ease all; 
  -webkit-transition:0.2s ease all;
}

/* active state */
input:focus ~ label, input:valid ~ label 		{
  top:-20px;
  font-size:14px;
  color:#5264AE;
}