<!DOCTYPE html>
<link rel='stylesheet' href='./style.css'>
<script src='./script.js' type='text/javascript'></script>
<style>
body {
height: 100px;
margin: 8px;
border: 0;
background-color: #555;
}
div {
line-height: 18px;
</style>
<div>Hi, I'm frame</div>