.single-content {
    transition: font-size 0.2s ease-in-out;
}

.single-content.font-small {
  font-size: 16px !important;
  line-height: 1.6 !important;
}

.single-content.font-normal {
  font-size: 18px !important;
  line-height: 1.7 !important;
}

.single-content.font-large {
  font-size: 20px !important;
  line-height: 1.75 !important;
}

.single-content.font-xlarge {
  font-size: 24px !important;
  line-height: 1.8 !important;
}