JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <button type="button" class="fiveup">AASDS ASDSAD</button>
    <button type="button" class="fiveup">BAA</button>
    <button type="button" class="fiveup">CAD ADASDASD ASDSADSDASD</button>
    <button type="button" class="fiveup">D</button>
    <button type="button" class="fiveup" id="remove_this">E</button>
</div>
<button id="remove_one">Remove One</button>

CSS

body * {box-sizing: border-box;margin: 0; padding: 0;border: 0;}
.fiveup {width: 18%;margin:1%;float: left;}
.fourup {width: 23%;margin:1%;float: left;}

JavaScript

$('#remove_one').click(function(){
    $('#remove_this').remove();
    $('button').each(function(){
        $(this).removeClass('fiveup').addClass('fourup');
    });
});