You can use the CSS Framework of Skeleton version 1.2 ! (Yes it is the older one, but I didn't like the newer version 2.0).
Add the following to the top of your HTML page:
<!DOCTYPE HTML>
<html>
<head>
<link rel="stylesheet" href="/stylesheets/base.css">
<link rel="stylesheet" href="/stylesheets/skeleton.css">
<link rel="stylesheet" href="/stylesheets/layout.css">
....
...
</head>
<body>
<div class="container">
<div class="row">
<div class="sixteen columns">
<h1 class="remove-bottom" style="margin-top: 40px"><img src="/./images/UnixPrompt.png" alt="Unix4Life"> Unix4Life</h1>
</div>
</div>
</div>
...
Then unzip the Skeleton-1.2.zip file in location /<Your Website root directory>/
The stylesheets directory should be created.
Download the local package of Skeleton version 1.2 via: https://www.unix4life.com/downloads/Skeleton-1.2.zip