Protocol
Omit the protocol portion (http:, https:) from URLs pointing to images and other media files, style sheets, and scripts unless the respective files are not available over both protocols. |
Identation
Don’t use tabs or mix tabs and spaces for indentation. |
Cheatography
https://cheatography.com
HTML5/CSS3 Cheat Sheet (DRAFT) by romarin
HTML5/CSS cheatsheet based on google's style guide
This is a draft cheat sheet. It is a work in progress and is not finished yet.