html, body {
  height: 100%;
}

.footer, .push {
  height: 3.4em;
}

.wrapper {
  min-height: 100%;
  height: auto !important;
  height: 100%;
  margin: 0 auto -3.4em;
}

.grabbable {
    cursor: move; /* fallback if grab cursor is unsupported */
    cursor: grab;
    cursor: -moz-grab;
    cursor: -webkit-grab;
}

 /* (Optional) Apply a "closed-hand" cursor during drag operation. */
.grabbable:active {
    cursor: grabbing;
    cursor: -moz-grabbing;
    cursor: -webkit-grabbing;
}