There was a question about it: https://itch.io/t/530331/how-to-remove-download-button-appearing-at-top-of-page, but it's archived and I am here trying to hide that section, but none of CSS tricks I tried could do this :/

.header_buy_row { display: none; }
or:

.header_buy_row>div { display: none; }

are not working for me. Maybe you see some mistakes here?
 Do you have any suggestions or working solutions?