Add "reply" text on mobile to the button

Product Support
2

You can target that element on mobile using:

html:not(.anon) #topic-footer-buttons .topic-footer-main-buttons .d-button-label {
  display: block;
}

In my quick test, I also needed to override the margin of the icon:

html:not(.anon) #topic-footer-buttons .topic-footer-main-buttons .d-icon {
  margin-right: 0.45em;
}