td.reseller_header {
    /*background-image: url(logo.png);*/
    background-repeat: no-repeat;
    background-position: 12px 40%;
}

td.reseller_header:after {
    position: absolute;
    content: "Diagnose Interface";
    font-size: 250%;
    font-weight: bold;
    color: #59748F;
    left:  40%;
    top: 30px;
    text-shadow: #D4D4D4 1px 1px 1px;
}

@media only screen and (max-width: 420px) and (max-height: 740px), only screen and (max-width: 740px) and (max-height: 420px) {
    #mainFrame tr:first-child td:first-child{

    }
    td.reseller_header {
        background-position: 0 40%;
        background-size: 100% auto;
        height:48px
    }
    td.reseller_header:after{
        display:none
    }
}