/*flex start*/
.sup-flexbox {
    display: flex;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-start {
    justify-content: flex-start;
}

.justify-content-end {
    justify-content: flex-end;
}

.justify-content-between {
    justify-content: space-between;
}

.justify-content-around {
    justify-content: space-around;
}

.align-items-start {
    align-items: flex-start
}

.align-items-end {
    align-items: flex-end
}

.align-items-center {
    align-items: center
}

.align-items-baseline {
    align-items: baseline
}

.align-items-stretch {
    align-items: stretch
}

.align-self-auto {
    align-self: auto;
}

.align-self-start {
    align-self: flex-start;
}

.align-self-end {
    align-self: flex-end;
}

.align-self-center {
    align-self: center;
}

.align-self-baseline {
    align-self: baseline;
}

.align-self-stretch {
    align-self: stretch;
}

@media (min-width:768px) {
    .flex-col-6 {
        flex: 0 1 50%;
    }

    .flex-col-4 {
        flex: 0 1 25%;
    }

    .flex-col-8 {
        flex: 0 1 75%;
    }

    .flex-col-5 {
        flex: 0 1 41.66666%;
    }

    .flex-col-7 {
        flex: 0 1 58.33333%;
    }
}
@media (max-width:767px) {
    .flex-wrap-xs-wrap {
        flex-wrap: wrap;
    }
    .flex-col-4,.flex-col-5,.flex-col-6,.flex-col-7,.flex-col-8 {
        width: 100%;
    }
}
/*flex end*/

/*参考What is SuperMap GIS的The Latest Products*/
.bg-black {
    background: #000;
}

.cardbox {
    position: relative;
    height: 100%;
}

.cardbox img {
    width: 100%;
    height: 100%;
}

.cardbox .ltb {
    position: absolute;
    left: 0;
    top: 0;
    padding: 30px;
    color: #fff;
    width: 60%;
}

.cardbox .ltb h2 {
    margin-bottom: 30px;
}

.cardbox .rfb {
    position: absolute;
    right: 30px;
    bottom: 0;
    width: 28%;
}

.cardbox .rfb a {
    display: inline-block;
    background: rgb(170 170 170 / 0.7);
    padding: 10px 10px 30px 10px;
    color: #fff;
    text-decoration: none;
}

.cardbox .rfb a:hover {
    background: #666;
}

/*参考What is SuperMap GIS的The Latest Products end*/