html,
body {
  height: 100%;
}
.menu {
  position: fixed;
  top: 0;
  right: 0;
  margin: 5px 10px;
  font-size: 3em;
  z-index: 1;
}
.table {
  display: table;
  width: 100%;
  height: 100%;
}
.table .cell {
  display: table-cell;
  vertical-align: middle;
}
.tl {
  text-align: left;
}
.tc {
  text-align: center;
}
.tr {
  text-align: right;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
.fn {
  float: none;
}
.h100p {
  height: 100%;
}
.w100p {
  width: 100%;
}
.whitebg {
  background: #fff;
}
.colorbg {
  background: #bc6ea9;
}
.whitetxt {
  color: #fff;
}
.blacktxt {
  color: #000;
}
.heightbig {
  height: 10000px;
}