.background_image{
    height: 100%;
    width: 100%;
    opacity: 0.1;
    pointer-events: none;
    position: fixed;
    z-index: 9999;
}

.dev{
    background-image: url(../images/dev_background_image.png);
}

.stg{
    background-image: url(../images/stg_background_image.png);
}

.loc{
    background-image: url(../images/loc_background_image.png);
}

.rls{
    background-image: url(../images/rls_background_image.png);
}