@media (max-width: 768px) {
    #header2 { 
        background-size: 200%;
        background-position: top!important;
    }
    #header3 { 
        background-size: 200%;
        background-position: left bottom!important;
    }    
    
    footer{
        height: auto;
        padding-top: 50px;
        padding-bottom: 30px;
        background-size: 300%;
    }
    
    footer.contact{
        height: auto;
        padding-bottom: 30px;
        background-size: 200%;
    }
}