JSFiddle - React, Tailwind, and code Playground

HTML

<div id="gallery">
    <div class="gal-foto">
        <img src="http://farm3.staticflickr.com/2819/10183644713_c1f49eb81f_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm4.staticflickr.com/3694/10183642403_0c26d59769_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm4.staticflickr.com/3764/10183532675_0ce4a0e877_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm6.staticflickr.com/5331/10183598286_9ab37e273c_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm6.staticflickr.com/5334/10183535585_04b18fa7da_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm6.staticflickr.com/5498/10183599376_947dd3e30e_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm8.staticflickr.com/7417/10186843333_f7e9a6f077_b.jpg" class="gal-img">
    </div>
    <div class="gal-foto">
        <img src="http://farm8.staticflickr.com/7434/10183599856_0c00516e4b_b.jpg" class="gal-img">
    </div>
</div>

CSS

#gallery {
    border: 1px solid;
    border-radius: 10px 10px 10px 10px;
    box-shadow: 0 0 15px rgba(50, 50, 50, 0.7) inset;
    height: auto;
    margin-top: 20px;
    padding: 15px;
}
.gal-foto {
    float: left;
    margin: 3px;
    position: relative;
}
.gal-img {
    display: block;
    max-height: 150px;
    max-width: 150px;
}