<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Thermal Print</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
#invoice-POS {
box-shadow: 0 0 1in -0.25in rgba(0, 0, 0, 0.5);
padding:.5mm;
margin: 0 auto;
width: 79mm;
background: #FFF;
}
#invoice-POS ::selection {
background: #f31544;
color: #FFF;
}
#invoice-POS ::moz-selection {
background: #f31544;
color: #FFF;
}
#invoice-POS h1 {
font-size: 1.5em;
color: #222;
}
#invoice-POS h2 {
font-size: 0.9em;
}
#invoice-POS h3 {
font-size: 1.2em;
