created html files for cart and search
created cart.css
added {{site.baseurl}} to form code
created css for .search and added a media query for .search
added .grid-left and .unit-l-1-4 created media for 78em
hid some code
added clear:both to footer
changed padding, margin, color, float, and border radius
added .grid-left and .no-centered to remove bullets and make text align left
linked cart.css to document
added .list-group and unit classes to <li>