使用Ruby编译Sass为CSS时持续报错，请求技术协助

Hey there! Let's break down why you're hitting that CSS error when compiling your Sass with Ruby.

First, let's recap the details you shared:

• Your input Sass code:

.content-navigation { 
  border-color: #eee; 
  color: #ddd; 
}

• The error you're seeing in the output CSS:

/* Error: Invalid CSS after "#eee": expected expression (e.g. 1px, bold), was ";" on line 3 of sass...

The Most Likely Culprit: Wrong File Extension #

This error almost always happens when you're using SCSS syntax (with curly braces and semicolons) but saved your file with the .sass extension instead of .scss.

Here's the key difference between the two syntaxes:

• .scss uses the familiar curly brace/semicolon structure you wrote (it's a superset of regular CSS, so valid CSS is automatically valid SCSS)
• .sass is the older, indentation-based syntax that doesn't allow curly braces or semicolons. When the Ruby Sass compiler sees your braces/semicolons in a .sass file, it gets confused and throws that "invalid CSS" error.

Fix Steps: #

1. Rename your Sass file from filename.sass to filename.scss
2. Double-check your file monitor settings to make sure it's watching the .scss file and pointing to the correct CSS output path
3. Re-run the compilation—your code should now generate valid CSS without errors!

Quick Checks for Other Potential Issues #

If renaming doesn't fix it, try these quick tests:

• Verify your Ruby Sass version by running sass --version in your terminal. Aim for 3.7.x or newer (note: Ruby Sass is deprecated, but if you're sticking with it, an up-to-date version avoids parsing bugs)
• Ensure your file doesn't have hidden special characters—sometimes copy-pasted code carries invisible characters that break the compiler's parsing

内容的提问来源于stack exchange，提问作者azam khan