.rightImg_container{
    width: 75%;
    margin-top: calc((50/750)*100vw);
}
.rightImg{
    width: 100%;
}

@media screen and (min-width:813px) {
    .imgflex{
        display: flex;
    }
    .mainImg_container{
        width: calc((576/1176)*100%);
    }
    .mainImg_container .mainImg{
        width: 100%;
    }
    .rightImg_container{
        width: calc((600/1176)*100%);
        margin-top: 0;
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .rightImg{
        width: 356px;
        height: auto;
    }
}