Khoảng cách giữa các từ
<!DOCTYPE html>
<html>
<head>
<style>
h2 {
letter-spacing: 5px;
}
h3 {
letter-spacing: -2px;
}
</style>
</head>
<body>
<h1>Using letter-spacing</h1>
<h2>This is heading 1</h2>
<h3>This is heading 2</h3>
</body>
</html>
hiepsiithtm1
