(master): Fix formatting of install instructions.

Author: Joe Crick

index.html

@@ -109,7 +109,7 @@ <h2 class="content-subhead">Pure CSS Components<a class="content-link"></a></h2>
                     </p>
                     <p>
                         Like Pure CSS, Pure.CSS Components is very small. It is only 2KB* (minified and zipped). Each
-                        component is also available as a module. So, if you only need modals, and nothing else, you
+                        component is also available as a module. So, if you only need <strong>modals</strong>, and nothing else, you
                         don't have to
                         include the entire package.
                     </p>
@@ -170,12 +170,12 @@ <h2 class="content-subhead">Installation</h2>
                         npm install:
                     </p>
 
-                    <div class="is-code-full">
-                        <pre>yarn add purecss<span>-</span>components</pre>
+                    <div>
+                        <pre><code>yarn add purecss-components</code></pre>
                     </div>
                     <p>or</p>
-                    <div class="is-code-full">
-                        <pre>npm i purecss<span>-</span>components</pre>
+                    <div>
+                        <pre><code>npm i purecss-components</code></pre>
                     </div>
                 </div>