JavaScript: Печать HTML страницы на А4

index.html

<select name="font" id="font">
 <option value="Arial" default>Arial</option>
 <option value="Helvetica">Helvetica</option>
 <option value="Times New Roman">Times</option>
</select>
<button class="print" onclick="printDiv('page')">Print</button>
<page class="offer" size="A4" id="page" contenteditable="true">
<br>
August 12, 2017 <br>
To,<br>
</page>

script.js

function printDiv(divName) {
 var printContents = document.getElementById(divName).innerHTML;
 var originalContents = document.body.innerHTML;
 document.body.innerHTML = printContents;
 window.print();
 document.body.innerHTML = originalContents;
}

$('#font').change(function(e){
 $('#page').css('font-family', $(this).val())
})

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