如何使用Stylus精简混合CSS选择器集合？

Alright, let's break down practical, Stylus-friendly ways to streamline your selector list—no extreme minification required, just clean, maintainable code aligned with Stylus's core logic:

• Group shared prefixes with nesting
  Stylus excels at nesting, which lets you eliminate repetitive prefixes. For your grouped selectors with shared starting classes:

  // Instead of .cl_nw, .cl_n, .cl_ne
  .cl_
    &_nw, &_n, &_ne
      // Your styles here
  
  // Instead of .alert_nw, .alert_n, .alert_ne
  .alert_
    &_nw, &_n, &_ne
      // Your styles here
  
  // Instead of .selected .color_fg1, .selected .color_fg2, .selected .color_fg3
  .selected
    .color_fg1, .color_fg2, .color_fg3
      // Your styles here
  

• Combine child selectors under shared parents
  For selectors that share a parent chain (like your .menuPopupList items), nest child selectors to avoid repeating the full parent path:

  // Instead of .menuPopupList li.selected, .menuPopupList li.selected a
  .menuPopupList li.selected
    &, & a
      // Your styles here
  

• Use placeholder selectors for reusable style patterns
  If multiple selector groups share identical styles, define a placeholder selector once and extend it wherever needed. This cuts down on redundant style declarations:

  %shared-highlight-style
    // Common styles (e.g., color, font-weight)
  
  .cl_
    &_nw, &_n, &_ne
      @extend %shared-highlight-style
  
  .selected .color_fg1, .selected .color_fg2, .selected .color_fg3
    @extend %shared-highlight-style
  

• Simplify long compound selectors with variables
  That unwieldy ul.checklists li.list_item span.tasks span.progress b selector can be stored in a variable to make your code cleaner and easier to update later:

  $taskProgressBase = ul.checklists li.list_item span.tasks span.progress
  
  $taskProgressBase b
    // Your styles here
  

内容的提问来源于stack exchange，提问作者ultracrepidarian