.cajon-300 { 
background: url('../img/portones-cajon/Cajon-Porton-Testero.jpg');
background-repeat: no-repeat;
background-size: cover;
background-position: right;   
}

.cajon-300-xxl { 
    background: url('../img/portones-cajon/Cajon-Testero-Porton.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: right;   
    }