body {
  background-color: #EFEFEF;
  text-align: center;
  font-family: arial, sans-serif;
}
.font-size-25{
  font-size: 25px;
}
.text-color-gray{
  color: gray;
}
.font-size-30{
  font-size: 30px;
}
.text-bold{
  font-weight: bold;
}
@media screen and (orientation: portrait) {
  .center{
    position: absolute;
    top: 30%;
    left: 25%;
  }
}
@media screen and (orientation: landscape) {
  .center{
    position: absolute;
    top: 15%;
    left: 36%;
  }
}
@media screen and (max-width: 1024px) and (orientation: landscape){
  .center{
    position: absolute;
    top: 15%;
    left: 25%;
  }
}