source: Use HTML and CSS markup sparingly and only with good reason.
target: Only us HTML and CSS markup when necessary.
references: Only us HTML and CSS markup when necessary. Do not use HTML and CSS markup often. Only use HTML and CSS markup sparingly and with good reason. Use HTML and CSS sparingly and for good reasons. Use HTML and CSS only when you need to. Only use HTML and CSS markups periodically and for a specific purpose. Use HTML and CSS markup only when needed. Only use HTML and CSS markup when necessary. HTML and CSS markups are used in small quantities when required. Don't use HTML and CSS too much only if needed.