JSFiddle - React, Tailwind, and code Playground

HTML

<a href="#" class="toggler">&nbsp;</a>
<a href="#" class="toggler off">&nbsp;</a>
<a href="#" class="toggler">&nbsp;</a>

CSS

a.toggler {
    background: green;
    cursor: pointer;
    border: 2px solid black;
    border-right-width: 15px;
    padding: 0 5px;
    border-radius: 5px;
    text-decoration: none;
    transition: all .5s ease;
}

a.toggler.off {
    background: red;
    border-right-width: 2px;
    border-left-width: 15px;
}

JavaScript

$(document).ready(function(){
    $('a.toggler').click(function(){
        $(this).toggleClass('off');
    });
});