The code for Lab07.css is: @charset "utf-8"; /* Lab 7 External Style Sheet - Jim Martinson */ article { background-color: #efe; margin-bottom: 0.5em; float: left; width: 70%; clear: both; } aside { background-color: #efd; margin-bottom: 1em; float:right; width: 30%; } footer { background-color: silver; margin-bottom: 1em; clear: both; } h1 { text-align: center; } h3 { margin: .25em 0; } header { background-color:silver; margin-bottom: 1em; } body { width: 90%; margin: 1em auto; border: 1px solid black; padding: 1em; }