remove unnecessary .structures-wrapper { .structure { &:first/last-child}} styles
include .scss in search extensions
re-order into generic/default correspondence, example-specific, and non-correspondence related
split CSS into three files
remove item-type specific styles that are subsumed by the defaults
replace "span." with "." where possible
CSS refactorings, & add ".unhighlighted" CSS class
correspondence-3-way-example.css
split correspondence-examples.scss into function-specific SCSS files
adjust equation styling
adjust width of ruby example