* {
    box-sizing: border-box;
}

body {
    /* background-color: #aaaaaa; */
    background-color: #000000;
    margin: 10px;
    padding: 0;
}

.content-wrapper {
    width: 100%;
    max-width: 650px;
    margin: 10px auto;
}

.main-image {
    width: 100%;
    height: auto;
    display: block;
}

#tile-container {
    position: relative;
    width: 100%;
}

.tile-item {
    position: absolute;
    display: block;
    text-decoration: none;
    z-index: 1;
    transition: transform 200ms ease;
}

.tile-item img {
    display: block;
    width: 100%;
    height: 100%;
}

.tile-item:hover {
    z-index: 100;
    transform: scale(1.4);
}