html,body,iframe {
  background-color: rgba(245, 245, 245, 0.7);
  height:100%;
}

.container {
  width: auto;
  max-width: 680px;
  padding: 0 15px;
}

.fill-height {
    min-height: 100%;
    height:auto !important; /* cross-browser */
    height: 100%; /* cross-browser */
}