To fix the issue in Google Chrome where the checkbox and title are not on the same line, you can follow these steps after pressing F12 and enabling the toggle device toolbar. If you want to maintain the Bootstrap stylesheet, here's how you can make sure the checkbox and title are aligned properly:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" />
</head>
<body>
<input name="agreement" type="checkbox" >
<label for="agreement">XXXXXXXXXXXXXXXXXXXXXXXXXXXX</label>
<br >
<input name="promotion" type="checkbox">
<label for="promotion">XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX</label><br>
</body>
</html>