* {
    margin: 0;
    padding: 0;
}

html {
    height: 100%;
}

body {
    height: 100%;
    overflow: hidden;
}

#navDiv {
    height: 100%;
    width: 180px;
    vertical-align: top;
    position: fixed;

}

#mainDiv {
    margin-left: 180px;
    margin-right: 0px;
    margin-bottom: 0px;
    height: 100%;
}

#navF {
    height: 100%;
}

#mainF {
    height: 100%;
    width: 100%;
    margin-bottom: 0px;
}

iframe {
    border: none;
}