CSS revamp - Improve typography and overall styling (#757)

* Improve CSS code

* Fix blog layout

* Fix

* Refactor onPageNav

* More fixes

* Fix docs nav

* Use alternative hack

* Tweak clearfix

lib/core/BlogPageLayout.js

@@ -31,13 +31,14 @@ class BlogPageLayout extends React.Component {
         title="Blog"
         language="en"
         config={this.props.config}
+        className="blog"
         metadata={{blog: true, blogListing: true}}>
         <div className="docMainWrapper wrapper">
           <BlogSidebar
             language={this.props.language}
             config={this.props.config}
           />
-          <Container className="mainContainer documentContainer postContainer blogContainer">
+          <Container className="mainContainer postContainer blogContainer">
             <div className="posts">
               {MetadataBlog.slice(page * perPage, (page + 1) * perPage).map(
                 post => {