body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}
#backToServer {
    position: fixed;
    top: 50px;
    left: 30px;
    padding-left: 5px;
    padding-right: 5px;
    border: #000 1px solid;
    border-radius: 5px;
    background-color: #f1f1f1;
    cursor: pointer;
    text-decoration: none;
}
#backToServer:hover {
    background-color: #e1e1e1;
}

#backTitle {
    margin: 0% !important;
    padding: 5px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    color: #000;
    font-weight: 100;
}

#mainFrame {
    width: 100%;
    height: 100%;
    border: none;
}