.album_container {
    display: grid;
    grid-column-gap: 0.4rem;
    grid-row-gap: 0.7rem;
}

.album {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: calc(2/3 * 100%);
    border-radius: 0.35rem;
    overflow: hidden;
}

.album a {
    display: block;
}

/* zoom in effect */
.album:hover img {
    transform: scale(1.1);
    -webkit-transform: scale(1.1);
}

.album img {
    width: 100%;
    height: 100%;
    border-radius: 0.35rem;
    box-shadow: 0 0 3px 0 rgba(0, 0, 0, 0.16);
    transition: transform .5s ease;
    transition: -webkit-transform .5s ease;
}

.album .mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0), rgba(51, 51, 51, 0.61) 60%, rgba(0, 0, 0, 0.47) 70%, black);
    border-radius: 0.35rem;
}

.album .info {
    position: absolute;
    bottom: 0.3rem;
    width: 100%;
    padding: 0 0.3rem;
    box-sizing: border-box;
    color: white;
}

.album .title {
    display: inline-block;
    width: 100%;
}

.album .date {
    font-size: 0.875rem;
}

/* Mobile Style */
@media only screen and (max-width: 768px) {

    .page_content_top .page_title {
        margin-bottom: 0;
    }

    .article_content {
        border-radius: 0 0 2px 2px;
    }

}
@media only screen and (max-width: 400px) {

    .album_container {
        grid-template-columns: 1fr;
        padding: 2.5%;
    }

}
@media only screen and (min-width: 401px) and (max-width: 768px) {

    .album_container {
        grid-template-columns: 1fr 1fr;
        padding: 2.5%;
    }

}

/* Desktop Style */
@media screen and (min-width: 769px) {

    .album_container {
        grid-template-columns: repeat(4, 1fr);
        margin-top: 0.625rem;
    }

}