on mobile, it's not really ideal that you have captions? to make those work for mobile they would have to be pretty small. So most people disable captions on mobile, But if you are determined add this css to your custom css box:
@media (max-width: 768px) {
.captiontitle {
font-size: 14px;
}
.captiontext p {
font-size: 10px;
}
}Kadence Themes