.page-gallery {
    background-image: url(../image/p4.png);
    background-size: auto;
    background-repeat: repeat;
    height: 100vh;
}

.gallery-container {
    position: absolute;
    left: 26vw;
    top: 22.5vh;
    width: 74vw;
    height: 77.5vh;
    border: solid 0px green;
    overflow-y: hidden;
}

.gallery-wrapper {
    width: 70vw;
    border: solid 0px orange;
}

.gallery-item {
    float: left;
    width: 50vh;
    height: 37.5vh;
    border: solid 1px rgba(100, 100, 100, 0);
}

.gallery-item_1st {
    background: rgba(255, 255, 255, 0.4);
    border: 1px solid rgba(80, 80, 80, 0.4);
}

.gallery-item-bottom {
    clear: both;
    height: 10vh;
}

.gallery-title {
    margin-top: 5vh;
    margin-left: 5vh;
    height: 24.375vh;
    width: 40vh;
    font-family: 'Noto Sans TC', '微軟正黑體', sans-serif;
    font-weight: 300;
    font-size: 2.4em;
    color: rgba(50, 50, 50, 1);
    line-height: 6vh;
    letter-spacing: 0.05em;
}

.photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-button {
    display: inline-block;
    width: 4vmin;
    height: 4vmin;
    margin-left: 1vmin;
    cursor: pointer;
    background-size: contain;
    background-repeat: no-repeat;
}

.gallery-prev {
    margin-left: 5vh;
    background-image: url(../image/btn/btn_left.svg);
}

.gallery-prev:hover {
    background-image: url(../image/btn/btn_left_rv.svg);
    transition: all .5s;
}

.gallery-next {
    background-image: url(../image/btn/btn_right.svg);
}

.gallery-next:hover {
    background-image: url(../image/btn/btn_right_rv.svg);
    transition: all .5s;
}

/* 
.ar-img_mask{
    background: white;
    opacity: 0.4;
}*/

.page-gallery_list {
    background-image: url(../image/p4.png);
    background-size: auto;
    background-repeat: repeat;
    height: 100vh;
}

.gl-container {
    position: relative;
    left: 26vw;
    top: 22.5vh;
}

.white_block {
    position: absolute;
    width: 74vw;
    height: 77.5vh;
    background: rgba(255, 255, 255, 1);
}

.img_block {
    position: absolute;
    top: 0;
    left: 0;
    width: 68vw;
    height: 62vh;
    border: solid 0px purple;
}

.img_block-image {
    position: absolute;
    left: 10vw;
    top: 5.5vh;
    width: 75vmin;
    height: 56.25vmin;
    background-image: none;
    background-size: cover;
    background-position: center center;
    transition: all .5s ease-in-out;
}

.img_block-text_block {
    position: absolute;
    left: 0vw;
    top: 9vh;
    height: 37.5vh;
    width: 22.5vw;
    background: rgba(255, 255, 255, 0.7);
    border: solid 0px black;
}

.img_block-text {
    margin-top: 3.5vh;
    margin-left: 5vw;
    font-family: 'Noto Sans TC', '微軟正黑體', sans-serif;
    font-weight: 300;
    font-size: 2.4em;
    color: rgba(50, 50, 50, 1);
    line-height: 6vh;
    letter-spacing: 0.05em;
}

.gl-item {
    display: inline-block;
    width: auto;
    margin-left: 2vw;
}

.posts_block {
    position: absolute;
    top: 64vh;
    left: 5vw;
    width: 65vw;
    white-space: nowrap;
    overflow-x: auto;
    overflow-y: visible;
    border: solid 0px orange;
    display: none;
}

.gl-titles {
    white-space: normal;
    display: inline-block;
    width: 10vw;
    /*just for test*/
}

.year_block {
    position: absolute;
    top: 5.5vh;
    left: 70vw;
    width: 4vw;
    height: 18vh;
}

.year_block-item {
    margin-bottom: 2px;
    width: 4vw;
    height: 2vw;
    line-height: 2vw;
    text-align: center;
    border: solid 1px rgba(230, 230, 230, 1);
    font-weight: 300;
    font-size: 0.8em;
    cursor: pointer;
}

.yb-item-selected {
    color: rgba(255, 255, 255, 1);
    background: rgba(230, 230, 230, 1);
}

.yb-item-normal {
    color: rgba(200, 200, 200, 1);
    background: rgba(230, 230, 230, 0);
}