Img not showing in Safari, does show in Chrome

I feel like I'm missing something here. I've got a website for a client where the images show up perfect in Chrome and just fail to appear entirely in Safari. I'm using only HTML and CSS. Any ideas? The live site is at angelahartley.net

HTML:

<ul class="gallery">
<li><img src="img/home1.jpg" title="newborn greta: by Josh Muir" alt="newborn greta in arms"></li>
<li><img src="img/home2.jpg" title="newborn greta: by Josh Muir" alt="baby greta on a rainbow"></li>
<li><img src="img/home3.jpg" title="photo by Santa Cruz Birth Photography" alt="baby, mom, and dad in birthing pool"></li>
</ul>

CSS:

    .gallery {
    width: 100%;
    margin: 0 auto;
    padding: 0;
    list-style: none;
    background-color: #947960;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-box;
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-around;
    align-items: center;
}
.gallery li {
    float: left;
    width: 33.33333333%;
    margin: 4px .5% 1px .5%;
    padding: 0 ;

}
img {
    max-width: 100%;
    border: 1px solid #00565E;
    border-radius: 2.5%;
}