main#preview SECTION DIV.dvIframe { margin: 1em 0; padding-top: 56.25%; position: relative }
main#preview SECTION DIV.dvIframe > IFRAME { border: 0; height: 100%; left: 0; position: absolute; top: 0; width: 100% }
main#preview DIV.dvControls { margin-top: 2em; text-align: center }

MAIN#preview .preview-00 { background-image: url('./../image/preview/00000.jpg') }
MAIN#preview .preview-01 { background-image: url('./../image/preview/00001.jpg') }
MAIN#preview .preview-02 { background-image: url('./../image/preview/00002.jpg') }
MAIN#preview .preview-03 { background-image: url('./../image/preview/00003.jpg') }