How do I modify my for loop to iterate x amount of time on character length?

Question

How should I modify my for loop so that the document.querySelector('.answer').style.marginTop = "-1rem"; iterates x amount of times? currently, it is not working, even though I change the value of I to a different number, nothing happens.

It will only happen once and that is because of the if (display.length >= 21)

function buttonPress(numbers) {

    let input = document.querySelector('.answer').innerText.split('\n').join('')+numbers
    let display = document.querySelector('.answer').innerHTML = input
    console.log(input)
  
    if (display.length >= 21) {

      for (let i = 0; i > display.length; i++) {
        document.querySelector('.answer').style.marginTop = "-1rem";
      }
    }
  }

Expected result output of screen behaviour with for loop:

|---------------|
|111111111111111|
|111111111111111|
|111111111111111|
|111111111111111|
|---------------|