#loader {
    position: absolute;
    width: 100%;
    height: 100%;
    display: table;
    text-align: center;
    background-color: #FFFFFF;
}

#loader > h2 {
    display: table-cell;
    vertical-align: middle;
    font-family: Calibri, serif;
}

#canvas-container {
    position: absolute;
    width: 100%;
    height: 100%;
    display: table;
    text-align: center;
}

#canvas-container > canvas {
    display: table-cell;
    margin: 0 auto;
    vertical-align: middle;
}

#page-number {
    position: absolute;
    left: 15px;
    bottom: 75px;
    padding: 5px;
    border: 1px solid #000000;
    background-color: #FFFFFF;
    font-family: Calibri, serif;
    font-size: 25px;
}