Admin > Look and Feel > Custom JS/CSS
lg-main.css
Admin > Look and Feel > Header/Footer/Tabs/Boxes
lg-header.html
lg-footer.html
Admin > Look and Feel > Page Layout > Guide
Layout Options for Guides lg-multi-page.html (Side Nav Mod - Updated)
Admin > Groups > Single Page (edit) > Look & Feel and Layout > Guide Pages
Layout Options for Guides lg-single-page.html (Single Page - Updated)