My HTML and CSS files won't link pleas : <p>html is like so:</p>

<pre><code>&lt;html&gt;
&lt;head&gt;
&lt;title&gt;In Loving Memory of Jill Erin Hayes&lt;/title&gt;
&lt;link rel="stylesheet" type="text/css" href="/additional_pages/fp_frye.css" /&gt;
&lt;/head&gt;

&lt;body&gt;
&lt;div id="maincontent"&gt;
&lt;div id="left"&gt;
&lt;h1&gt;Jill E. Hayes&lt;/h1&gt;
&lt;ul&gt;&lt;li&gt;mother&lt;/li&gt;
&lt;li&gt;&lt;a href="https://www.utm.edu/departments/finearts/vanguard/index.php"&gt;actress&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;election commissioner&lt;/li&gt;
&lt;li&gt;and so very much more&lt;/li&gt;
&lt;/div&gt;

&lt;div id="right"&gt;
&lt;h2&gt;Her Story&lt;/h2&gt;
&lt;p&gt;Born to Jerry and Debbie Hayes in Henry, TN in 1980, Jill was always very creative and fun. 
She flew through school, active in 4-H and theatre, all while maintaining good grades and a 
positive outlook on life. She attended the University of Tennessee at Martin after graduating Henry 
County High School, and in college, she majored in theatre and was a very active member of UTM's 
Vanguard theatre program. She met Joseph Frye in college, and the married and had two children,
Shelby, named after her favorite play, &lt;i&gt;Steel Magnolias&lt;/i&gt;, and Hayes, named for her maiden name.&lt;/p&gt;

&lt;p&gt;Jill gave up her dreams of Broadway to be a mother, and she got a job as the Henry County 
Administrator of Elections, where she not only helped her police officer husband raise their family, but 
also was able to be active in the democratic system, which she had always been passionate about. She worked 
elections for fifteen years before illness struck, and she was forced to resign to focus on regaining her 
health.&lt;/p&gt;

&lt;p&gt;Lupus is, unfortunately, into a disease that garners much attention, despite being a fatal one. Jill went
to countless doctors attempting to find out what was wrong with her before she was finally diagnosed with lupus,
an aggressive autoimmune disease. This on top of being forced to quit her job as well as the divorce that 
ended a regrettably failing marriage was hard on her, but she still persevered to be the mother that 
both of her children needed. She managed to live with lupus for six years, before passing away at her parents'
home on October 18, 2015, just weeks before her 25th birthday.&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>And then my Css file is like this:</p>

<pre><code>body {
    background-color:light-green;
}

#maincontent {
    background-color:white;
    width:680px;
    height:400px;
    padding-top:20px;
    padding-left:20px;
    padding-right:20px;
}

#left {
    background-color:light-pink;
    width:200px;
    float:left;
    height:200px;
}

#right {
    background-color:light-green;
    width:400px;
    float:left;
    margin-left:40px;
    height:200px;
}
</code></pre>

<p>I don't understand why it won't link, and I've visited several other forum topics on this subject. I'm very new to coding - this is for a class required to graduate - and I need help.</p>
