JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="container-inner">
        <div class="container-inner-element">
            <img src="http://placehold.it/150x150" />
        </div>
        <div class="container-inner-element">
            <img src="http://placehold.it/150x150" />
        </div>
        <div class="container-inner-element">
            <img src="http://placehold.it/150x150" />
        </div>
        <div class="container-inner-element">
            <img src="http://placehold.it/150x150" />
        </div>
    </div>
</div>

CSS

.container-inner-element {
    float: left;
    margin: 5px;
}
.container-inner {
    max-width: 640px;
    margin: auto;
    height: 160px;
    background-color: red;
}
.container {
    width: 100%;
    height: 160px;
    background-color: blue;
}