JSFiddle - React, Tailwind, and code Playground

HTML

<div id='outerdiv'>
    <div class='class-1'>A</div>
    <div class='class-2'>B</div>
    <div class='class-3'>C</div>
    <div class='class-4'>D</div>
    <div class='news'>E</div>
</div>

JavaScript

$(function() {
   $('#outerdiv > div').not('.news').css('background-color', 'red'); 
});