#YesOrNo{
  height: 85%;
  margin-top:8vh;
  display: none;
}
#YesOrNo h1 {
  margin-top: 2.5vh;
  margin-bottom: 4vh;
  min-height: 2.5em;
}
.whether{
  height: 14vh;
  margin: 0 auto;
}
#btn-YesOrNo-back{
  position: fixed;
  bottom: 13vh;
}