Remove some inline CSS and add some HTML classes for easier styling

sites/forbes.com/index.md

 # **Cloud of Shame** Forbes (forbes.com)
 
-<blockquote style='font-size: 1.5em; text-align:left;'>“Every year, one human life worth of time – over 87 years – is lost to one ‘annoying’ doorslam on one site.”</blockquote>
+<blockquote class='standout'>
+  <p>“Every year, one human life worth of time – over 87 years – is lost to one ‘annoying’ doorslam on one site.”</p>
+</blockquote>
 
 ![Forbes doorslam](doorslam.jpg)
 
@@ -22,13 +24,13 @@ Let’s be conservative again. Let’s say that each one of those visitors visit
 
 In other words, **every year, one human life’s worth of time – over 87 years – is lost to oxne ‘annoying’ doorslam on one site.**
 
-<div style='padding: 24px; padding-bottom: 12px; border-radius: 12px; background-color: #f3f3f3; margin-top: 24px; margin-bottom: 24px;'>
-  <p style='border-bottom: 1px solid lightgrey;'>46,000,000 people × 5 seconds = 230,000,000 seconds</p>
-  <p style='border-bottom: 1px solid lightgrey;'>230,000,000 seconds ÷ 60 seconds = 3,833,333 minutes</p>
-  <p style='border-bottom: 1px solid lightgrey;'>3,833,333 minutes ÷ 60 minutes = 63,888 hours</p>
-  <p style='border-bottom: 1px solid lightgrey;'>63,888 hours ÷ 24 hours = 2,662 days</p>
-  <p>2,662 days ÷ 365 days = <span style='font-weight: bold; border-bottom: 3px double #ababab;'>7.3 years</span></p>
-</div>
+<ul class='calculation'>
+  <li>46,000,000 people × 5 seconds = 230,000,000 seconds</li>
+  <li>230,000,000 seconds ÷ 60 seconds = 3,833,333 minutes</li>
+  <li>3,833,333 minutes ÷ 60 minutes = 63,888 hours</li>
+  <li>63,888 hours ÷ 24 hours = 2,662 days</li>
+  <li class='final-calculation'>2,662 days ÷ 365 days = <strong class='total'>7.3 years</strong></li>
+</ul>
 
 It‘s time we started taking the externalities of the behavioural advertising industry seriously. One of those externalities is human time wasted. The unit is lifetimes lost per year.
 
@@ -38,9 +40,8 @@ But don’t worry, because everything you’ve just read only applies to you if
 
 If you want to regain your lost 5 seconds, all you have to do is to pretend that you’re a robot. The easiest way to skip Forbes’s doorslam is to set your browser’s user agent to pretend that it’s the Googlebot:
 
-```
-Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
-```
+<pre class='single-string'><code>Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
+</code></pre>
 
 And, boom!