<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Frame 1</title>
    <script src="js/html-test-utilities.js"></script>
    <script src="js/popup-tests-frame1.js"></script>
    <style>
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 14px;
    padding: 0;
    margin: 0;
    background-color: #f8f8f8;
}
a, a:visited {
    color: #1080c0;
    text-decoration: underline;
}
.content {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    padding: 0.5em;
    background-color: #f8f8f8;
}
    </style>
</head>
<body><div class="content">
<div>
    ありがとう
</div>
<div>
    <a href="#" class="fullscreen-link">Toggle fullscreen</a>
</div>
</div></body>
</html>