/*Default*/
#responsive_img {
    width:800px ;
}

.responsive_default {
    display:inline-block;
    color: #159957;
}
.responsive_100, .responsive_600, .responsive_800 {
    display:none;
    color: #159957;
}

/*Target devices 100-599px*/
@media only screen and  (min-width: 100px) and (max-width: 599px) {

    #responsive_img {
        width:300px ;
    }

    .responsive_100 {
        display:inline-block;
    }
    .responsive_default {
        display:none;
    }

}
/*Target devices 600-799 width*/
@media only screen and (min-width: 600px) and (max-width: 799px) {

    #responsive_img {
        width:450px;
    }

    .responsive_600 {
        display:inline-block;
    }
    .responsive_default {
        display:none;
    }
}

/*Target devices 800-1199px*/
@media only screen and  (min-width: 800px) and (max-width: 1199px) {

    #responsive_img {
        width:600px ;
    }

    .responsive_800 {
        display:inline-block;
    }
    .responsive_default {
        display:none;
    }

}