JSFiddle - React, Tailwind, and code Playground
HTML
<div class="row ">
<div class=" s12 col m6 input-field">
<input name="first_name" type="text" id="form-input-first_name"/>
<label for="form-input-first_name"><a href="">First Name</a></label>
</div>
</div>
CSS
.row{
background-color:#999;
}
.row a .active-link {
background-color:red;
}