Caption text for Post feature image does not hide in mobile view

Hi, Please refer to this post – https://www.dreamsvoyager.com/northern-lights-in-norway/
I added additional CSS code – “.featured-media figcaption {
display: none;}” ….to hide the caption text which was showing for feature image, it worked for desktop view, but still showing in mobile. Could you help in hiding the same for mobile view also?