#field_6_23 {
  grid-column-start: 1;
  grid-column-end: span -1;
}

#gfield_instruction_6_57,
#gfield_instruction_6_58 {
  display: none;
}

@media (min-width: 641px) {
  #field_6_23 {
    grid-column-end: span 4;
  }
}