JSFiddle - React, Tailwind, and code Playground

HTML

<div id="scroller_shadow">
        <div id="scroller_shadow_tile">
            <img src="http://howardash.plentycontent.com/images/ui/about-tile.jpg" alt="" />
            <img src="http://howardash.plentycontent.com/images/ui/about-tile.jpg" alt="" />
            <img src="http://howardash.plentycontent.com/images/ui/about-tile.jpg" alt="" />
            <img src="http://howardash.plentycontent.com/images/ui/about-tile.jpg" alt="" />
        </div>
    </div>

CSS

#scroller_shadow {
        width:500px; /*whatever your width is*/
        height: 100px; /*whatever your height is*/
        overflow:hidden;
    }

    #scroller_shadow_tile {
        width: 9999px; /*Something absurdly large*/
        height: 100%;
    }

    #scroller_shadow_tile img {
        height: 100%;
        display:block;
        float:left;
        width: auto;
    }