.leftIframe {
  border-right: 1px solid black;
}
.uleftIframe {
  border-bottom: 1px solid black;
}
.lleftIframe {
}
.rightIframe {
  border-left: 1px solid black;
}
.urightIframe {
  border-bottom: 1px solid black;
}
.lright1Iframe {
  border-right: 1px solid black;
}
.lright2Iframe {
}
html,body {
 height:100%; /* needed for container min-height */
}
div#mainContainer {
 width:100%;
 height:100%;
}