JSFiddle - React, Tailwind, and code Playground

HTML

<div class="stars_con"><div class="stars"></div></div>

CSS

.stars_con
{
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 320px;
    
}
.stars{
    background: url('http://i59.tinypic.com/2i95zzk.png') left center repeat-x;
    width:100%;height: 320px;
}

JavaScript

$(window).on("resize load", function () {
    var screenWidth = $(window).width();
    var starWidth = 320;
    var width = screenWidth - (screenWidth % starWidth);
    $('.stars').css({
        'width': width
    });
});