.index-separation-line{
    width: 100%;
    height: 1px;
    display: block;
    background-color: #d1d1d1;
    margin:100px 0;
}
.justtop_index_about_box{
    width: 1200px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    font-size: 0;
    padding-bottom: 50px;
}

.about-info-logo-box,
.about-info-articlebox{
    display: inline-block;
    vertical-align: top;
    width: 50%;
}


.about-info-article{
    font-family: "Roboto1","微軟正黑體";
    font-size: 16px;
    color: #555555;
    line-height: 1.8;
    font-weight: 600;
}
.about-img-box{
    width: 100%;
    height: 340px;
    display: block;
    margin-top: 30px;
}
.about-img-mask{
    width: 100%;
    height: 100%;
    display:         flex;
    display: -webkit-flex;
          align-items: center;
    -webkit-align-items: center;
          justify-content: center;
    -webkit-justify-content: center;
    background-color: rgba(0,0,0,0.7);
    font-size: 50px;
    color: #FFF;
    position: absolute;
    top: 0;
    left: 0;
    cursor: pointer;
}
.about-img-mask.img-open,
.img-open .about-img-mask,
.video-close .about-img-mask
{
    display: none;
}