JSFiddle - React, Tailwind, and code Playground

HTML

<div class="christmas_promotion_boxes">
    <img src="http://lilliemcferrin.com/wp-content/uploads/2013/09/vivid_flowers-wide.jpg" width="200" height="100"/>
    <img src="http://lilliemcferrin.com/wp-content/uploads/2013/09/vivid_flowers-wide.jpg" width="200" height="100"/>
    <img src="http://lilliemcferrin.com/wp-content/uploads/2013/09/vivid_flowers-wide.jpg" width="200" height="100"/>
</div>

CSS

.christmas_promotion_boxes {
    width:1000px;
    margin:0 auto 0 auto;
    display:inline-block;
}