message: Minor changes on the cancel button
diff: @@ -105,12 +105,12 @@ function loadHint (hint: ChallengeHint): HTMLElement {
  cancelButton.style.backgroundColor = 'transparent'
  cancelButton.style.border = 'none'
  cancelButton.style.color = 'white'
  - cancelButton.innerHTML = '<div style="font-size:"large";">&times;</div>'
  + cancelButton.innerHTML = '<div style;">&times;</div>'
  cancelButton.style.fontSize = 'large'
  cancelButton.title = 'Cancel the tutorial'
  cancelButton.style.position = 'relative'
  cancelButton.style.zIndex = '20001'
  - cancelButton.style.bottom = '-20px'
  + cancelButton.style.bottom = '-22px'
  elem.appendChild(picture)
  elem.appendChild(textBox)
  