Different Section on Desktop – Mobile

Suppose you want to show section X on Desktop, section Y on mobile, you can follow these.
#1. First, add 2 Sections

#2. Find ID of 2 Sections

#3. Use CSS code like this to Website Tools > Custom CSS

/* Hide Section on Desktop */
@media screen and (min-width:768px) {
  section[data-section-id="66e54995c3adc870f1846441"] {
    display: none;
  }
}
/* Hide Section on Mobile */
@media screen and (max-width:767px) {
  section[data-section-id="66e54986a181a2181d3a8c49"] {
    display: none;
  }
}