Tell us what’s happening:
Describe your issue in detail here.
- 
How can I put the “Reference” on the side navigation bar down like others? 
- 
How can I remove the white space on the top of the page so that the border-right can starts direct from the top without having any space in between? 
- 
How to put border line for each list on the navigation bar? 
Thank you for the help 

Your code so far
<!-- file: index.html -->
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>JS Documentation</title>
        <link rel="stylesheet" href="styles.css">
    </head>
    <body>
        <nav id="navbar">
            <header class="title">JS Documentation</header>
            <ul>
                <li><a href="#introduction">Introduction</a></li>
                <li><a href="what_you_should_already_know">What you should already know</a></li>
                <li><a href="#javascript_and_java">JavaScript and Java</a></li>
                <li><a href="#hello_world">Hello World</a></li>
                <li><a href="#reference">Reference</a></li>
            </ul>
        </nav>
/* file: styles.css */
html {
   
    display:block;
}
body {
    line-height:  1.5;
    font-family:'open sans', 'arial'
}
#navbar {
    height: 100%;
    width:300px;
    background-color:beige;
    z-index: 1;
    top: 0; 
    left: 0;
    overflow-x: hidden; 
    display:absolute;
    border-right:solid 4px black;
    padding-bottom:1300px;
}
#navbar a{
    font-size:20px;
    text-decoration:none;
    color:black;
    display:block;
    padding:6px 8px;
    border-bottom:0;
    border-right:0;
    overflow:hidden;
    float: left;
}
#navbar ul {
    list-style-type: none;
}
main {
    margin-left:300px;
    padding:40px 40px;
    position:absolute;
    top:0;
}
header{
    font-size:25px;
    font-style:bold;
}
#code {
    background-color:beige;
    padding:20px;
    position:absolute;
}
.header {
    margin:auto -20px;
    font-style:bold;
}
.title {
    text-align:center;
    font-size:30px;
    padding:10px;
}
Your browser information:
User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36
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