<!DOCTYPE html>
<html>
<head>
<style>
body {margin:0;}

h1, h2 {
    text-align: center;
}
p, ol, li {
    line-height: 1.3;
}
div.fixed {
    position: fixed;
    bottom: 0;
    right: 0;
    width: 300px;
    border: 3px solid #73AD21;
    border-color: gainsboro;
}


ul.bar {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: gray;
    position: fixed;
    top: 0;
    width: 100%;
    text-align: center;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:visited {
    color: honeydew;
}

li a:hover {
    background-color: honeydew;
    color: gray;
}

.active {
    background-color: gray;
}
<div style="padding:20px;margin-top:30px;background-color:#1abc9c;height:1500px;">


</body>
</html>