.index-image-box{
    width: 100%;
    display: block;
    position: relative;
    box-sizing: border-box;
    padding: 40px 0;
}
.index-image-all-box{
    width: 100%;
    display: block;
    background-color: #7b2532;
    box-sizing: border-box;
    padding: 80px 0;
}
.index-image-info-box{
    width: 1280px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    font-size: 0;
}
.index-image-info{
    width: 580px;
    height: 300px;
    display: inline-block;
    vertical-align: top;
    margin-right: 120px;
    overflow: hidden;
}
.index-image-info:nth-child(2n){
    margin-right: 0;
}
.index-image-info:nth-child(n + 3){
    margin-top: 60px;
}
.index-image-bg-box{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}


@media only screen and (max-width: 1300px){
    .index-image-info-box{
        width: 1180px;
    }
    .index-image-info{
        width: 530px;
        height: calc((300 / 580) * 530px);
    }
}
@media only screen and (max-width: 1200px){
    .index-image-info-box{
        width: 980px;
    }
    .index-image-info{
        width: 460px;
        height: calc((300 / 580) * 460px);
        margin-right: 60px;
    }
}
@media only screen and (max-width: 1000px){
    .index-image-box{
        padding: 20px 0;
    }
    .index-image-all-box{
        padding: 40px 0;
    }
    .index-image-info-box{
        width: 740px;
    }
    .index-image-info{
        width: 350px;
        height: calc((300 / 580) * 350px);
        margin-right: 40px;
    }
}
@media only screen and (max-width: 768px){
    .index-image-info-box{
        width: 540px;
    }
    .index-image-info{
        width: 100%;
        height: calc((300 / 580) * 540px);
        margin-right: 0;
    }
    .index-image-info:nth-child(2){
        margin-top: 20px;
    }
}
@media only screen and (max-width: 550px){
    .index-image-box{
        padding: 10px 0;
    }
    .index-image-all-box{
        padding: 20px 0;
    }
    .index-image-info-box{
        width: calc(95vw - 10px);
    }
    .index-image-info{
        width: 100%;
        height: calc((300 / 580) * (95vw - 10px));
        margin-right: 0;
    }
    .index-image-info:nth-child(2){
        margin-top: 20px;
    }
}



@media only screen and (min-width: 1001px){
    .index-image-info:hover .main-bg{
        transform: scale(1.1);
    }

    .index-image-info{
        opacity: 0;
    }
    .index-image-info.anima{
        animation: fade 1s ease 0s 1 both;
    }
}