body
{
    font-family: Arial, Helvetica, sans-serif;
    font-size: 14px;
}

.caption
{
     
        position: absolute;
        z-index: 1;
}

.img1
{
    position: relative;
}






#left
{
    border: black 1px solid;
}

#pg4img1
{
    background: url(pg4img1.jpg);
    background-size: 23vw 30vh;
    background-repeat: no-repeat;
}

nav{
    z-index: 0;
}


@media not all and (min-width: 1024px){ 
    #pg4img1
    {
        
        background-size:42vw 15vh;
        background-repeat: no-repeat;
    }
 }



@media not all and (min-width: 640px) {
    #pg4img1
{
    background: url(pg4img1.jpg);
    background-size:80vw 30vh;
    background-repeat: no-repeat;
}
}