.bg {
    /* The image used */
    background-image: url('../Image/bgBig.jpg');
    /* Full height */
    height: 100VH;
    /* Center and scale the image nicely */
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    overflow:hidden;
}

.caption img {
    margin: 10px 45px;
    border-radius: 10px;
    box-shadow: -1rem 0 2rem #00000063;
}

.caption {
    position: absolute;
    left: 0;
    top: 40%;
    width: 100%;
    text-align: center;
    color: #000;
    background-color: #ffffff98;
    padding: 30px 0;
}


@media only screen and (max-width: 767.98px) {
    .caption {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        text-align: center;
        color: #000;
        background-color: #ffffff98;
        padding: 30px 0;
        height: 100%;
    }
}