html, body {
  height: 100%;
  overflow: hidden;
}

.mainPage {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.subPage {
  height: 100%;
  display: none;
  overflow-y: scroll;
  position: relative;
}

.page {
  flex-grow: 1;
  flex-basis: 0;
}

hr {
  margin: 0;
}

.backbutton {
  position: absolute;
  margin: 5pt;
  width: 15pt;
  z-index: 2;
  margin: 5pt;
}

.helpMark {
  width: 25pt;
  position: absolute;
  bottom: 15pt;
  left: 15pt;
  background-color: white;
  border-radius: 12.5pt;
  z-index: 1;
  margin: 5pt;
}