Before deployment, is there tool to compress HTML class attribute and CSS selectors?

Question

In current project, I was asked for compressing the HTML class attribute and corresponding CSS selectors before deployment. For example, the code on

Answer 1

This is amazingly short-sighted.

• Step 1: Turn on GZip or Zlib compression in web server
• Step 2: All text gets compressed, often by 70% or more
• Step 3: There is no step 3.
• Step 4: PROFIT