We are looking at swapping over to the Essential theme. One thing we are keen to do is reduce the size of the pre and post blocks and replace that free space with the main content block. I had a play with 'span' under columns but cannot get both side-pre and side-post to reduce and be the same size. How can I achieve this or does the responsiveness make this a problem. We are using Moodle 2.7.1 and the latest essential plugin.