Narrow Sidebar and "Read More"

I asked, at some point, how to increase the width of my sidebar on this page: http://www.cayceberryman.com/1073-2/ I used the CSS

#main-content .right-sidebar .col-3.hb-sidebar {
padding-left: 0px !important;
}

and it’s still narrow.

The “You may also like” options at the bottom are also really narrow. Since that part is probably due to the width of the screen, is there a setting to change the number of suggested posts?