.top-img {
    width:100%;
    height: 25vw;
    background-image: url("../../img/Aboutus/top-img.png");
    background-repeat: no-repeat;
    background-position:contain;
    background-size: 100% auto;
}
.center-row {
    height:500px;
}
.center-img{
    height:100%;
    margin:0 auto;
}
.aboutus-title{
    font-weight: bold;
    margin-bottom: 100px;
}
.align-interval{
    margin-bottom:15px;
}
.center-text-rightbottom{
    position:absolute;
    bottom:0;
}
.center-phone{display:none;}
/* pad size */
@media screen and (min-width: 762px) and (max-width: 1024px) {
    .center-row{display:none;}
    .center-phone{display:inline;}
    .text-phone{
        margin-top: 50px;
        padding-bottom: 10px;
        border-bottom: 2px solid #698E86;
    }
}

/* iphone and big screen phones */
@media screen and (min-width: 415px) and (max-width: 767px) {
    .center-row{display:none;}
    .center-phone{display:inline;}
    .text-phone{
        margin-top: 50px;
        padding-bottom: 10px;
        border-bottom: 2px solid #698E86;
    }
}

/* other phones */
@media screen and (min-width: 320px) and (max-width: 414px) {
    .center-row{display:none;}
    .center-phone{display:inline;}
    .text-phone{
        margin-top: 50px;
        padding-bottom: 10px;
        border-bottom: 2px solid #698E86;
    }
}

/* small size phones */
@media screen and (max-width: 319px) {
    .center-row{display:none;}
    .center-phone{display:inline;}
    .text-phone{
        margin-top: 50px;
        padding-bottom: 10px;
        border-bottom: 2px solid #698E86;
    }
}