html,
body {
    height: 100%;
    margin: 0;
}

#horizontalSplitter #item0 {
    width: 500px;
    height: 250px;
}

#horizontalSplitter #item4 {
    width: 500px;
    height: 250px;
}

#horizontalSplitter #item5 {
    width: 150px;
    height: 150px;
}

#horizontalSplitter {
    width: 100%;
    height: 100%;
}

#verticalSplitter #item1,
#verticalSplitter #item2 {
    width: 32.5%;
    /*width: 250px;*/
}