heart buttons and horizontal lines

Question

hey guys. i'm having a little trouble with my heart buttons and <hr /> lines . i've commented detailed descriptions of the issues in my program, please help me out .
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please and thank you .

https://code.sololearn.com/W9dc7IZz1bd6/?ref=app

Answer 1

https://code.sololearn.com/WzR7ZWa2RbZ5/?ref=app
I explained all in comment on your code, hope this help