@charset "UTF-8";

* {
    margin: 0;
    padding: 0;
    vertical-align: bottom;
}

body {
    display: grid;
    justify-content: center;
}

img {
    width: 100%;
    height: auto;
}

h1 {
    text-align: center;
    padding: 10px 0;
}

footer {
    text-align: center;
}

.gallery {
    max-width: 800px;
    padding: 10px;
}

ul {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    padding-top: 10px;
    gap: 10px;
}

ul li img {
 transition: opacity .5s;
}

ul li img:hover {
  cursor: pointer;
  opacity: .7;
}

.gallery div {
    position: relative;
}

#caption {
    position: absolute;
    bottom: 5px;
    background: rgba(0, 0, 0, .30);
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
    color: #ffb1dd;
}

@media screen and (max-width: 640px) {
    ul {
        grid-template-columns: 1fr 1fr 1fr;
    }
}