slide-custom.css

.ms-slide-info{
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0 !important;
  min-height: 0 !important;
  display: flex;
  justify-content: center;
  align-items: center;
}

.ms-slide-info p {
  position: relative;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  transform: none;
  margin: 0;
  padding: 0;
  white-space:normal !important;
}

@media only screen and (max-width: 767px){
  .ms-slide-info p {
    font-size:x-large !important;
  }
}

@media only screen and (max-width: 480px){
  .ms-slide-info p {
    font-size:large !important;
  }
}