*,
html,
body {
  margin: 0;
  padding: 0;
}
html,
body {
  width: 100%;
  height: 100%;
}
#toggler {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  top: 20px;
  color: orange;
  font-family: "Roboto", sans-serif;
}
.opf-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Roboto", sans-serif;
  background: #e6edea;
}