how to change the text of a button

how can I change the text of a button, try to change from the css, but I have not managed to change, could you tell me how to do it thanks
<input type=”submit” value =”submit” class=”button button-primary”></input>

• This topic was modified 6 years, 1 month ago by diaz09.

The page I need help with: [log in to see the link]