@CHARSET "UTF-8";
body {
    font-family: Helvetica;
    font-size: 12px;
    color: #63665F
}

.step {
    display: grid;
    grid-template-areas:
        "step-title step-title"
        "step-picture step-thumbs"
        "step-picture step-contents";
    grid-template-rows: auto auto 1fr;
    grid-template-columns: 50% 50%;
    margin: 0;
}

/* Stack the layout on small devices/viewports. */
@media all and (max-width: 479px) {
    .step {
        grid-template-areas:
            "step-title"
		"step-picture"
		"step-thumbs"
		"step-contents";
        grid-template-rows: auto 1fr 90px auto;
        grid-template-columns: auto;
    }
}

.step-title {
    grid-area: step-title;
}

.step-picture {
    grid-area: step-picture;
    max-width: 100%;
}

/* Make the picture fill width on small devices/viewports. */
@media only screen and (max-width: 479px) {
    .step-picture {
        margin-bottom: 10px;
        width: 100%;
    }
}

.step-thumbs {
    grid-area: step-thumbs;
}

.step-contents {
    grid-area: step-contents;
    padding: 10px;
}

.step-thumb {
    border-radius: 3px;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .15);
    margin: 10px 10px 0px 10px;
    display: inline-block;
    max-width: 27%!important;
    max-height: 90px;
    opacity: .7;
    transition: box-shadow .2s, border-color .2s, opacity .2s;
}

/* Make thumbnails on a separate row on small devices/viewports.*/
@media only screen and (max-width: 479px) {
    .step-thumb {
        width: 30%;
        max-height: 180px;
    }
}

.step-thumb.active,
.step-thumb:hover {
    transform: translateY(-4px);
    opacity: 1;
    box-shadow: 0 4px 10px rgba(0, 0, 0, .5)
}

/* No translation and smaller shadow on small devices/viewports. */
@media all and (max-width: 479px) {
    .step-thumb.active,
    .step-thumb:hover {
        transform: translateY(0);
        box-shadow: 0 0 2px rgba(0, 0, 0, .75)
    }
}