CSS is a styling document the browsers use to place and style the elements of a web page. It cannot be used to add functionality not already in the theme.
You could use an HTML table at the top of the content area, below the title, and then repeat that at the end of the content. Here is the code for a simple 4-column, 1-row HTML table you can try out. I set each cell to have a 25% width and the overall table has a 100% width.
<table border="0" bordercolor="#FFFFFF" style="background-color:#FFFFFF" width="100%" cellpadding="3" cellspacing="3">
<td style="width: 25%;">First Chapter</td>
<td style="width: 25%;">Prior Chapter</td>
<td style="width: 25%;">Next Chapter</td>
<td style="width: 25%;">Newest Chapter</td>
There are a number of online HTML table generators, but many of them use depreciated or obsolete code. I got the above (with the exception of the 25% width cell code) at: http://www.quackit.com/html/html_table_generator.cfm .
Although some CSS trickery can be used to move the table up above the post title, with a responsive width theme such as you are using, it can be tricky to get it all to work cleanly on all the different screen widths from a smart phone all the way up to a desktop monitor.