Updated Features Section

- used cards
- updated browser color

_includes/head.html

@@ -5,7 +5,6 @@
     <meta name="description" content="{{site.description}}">
     <meta name="author" content="{{site.author}}">
     <meta name="keywords" content="{{site.keywords}}">
-    <meta name="theme-color" content="#2C3E50">
     <link rel="canonical" href="{{page.url | replace:'index.html','' | prepend: site.baseurl}}">
     <title>{{site.title}}{% if page.title %} | {{page.title}}{% endif %}</title>