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CSS 优先级计算器

计算 CSS 选择器的优先级分数,理解层叠规则,调试样式冲突。

点击试用:
h1 .title
(0,0,1,1)
0
内联
0
ID
1
类/属性/伪类
1
元素/伪元素
#main .nav > a:hover
(0,1,2,1)
0
内联
1
ID
2
类/属性/伪类
1
元素/伪元素

CSS 优先级计算器与指南

CSS 优先级决定当多个规则针对同一元素时应用哪些样式。优先级由四个数字组成:内联样式、ID 数量、类/属性/伪类数量、元素/伪元素数量。理解优先级对于编写可维护的 CSS 至关重要。

常见问题

什么是 CSS 优先级?
CSS 优先级是给每个选择器的权重,决定当多个规则应用于同一元素时哪些样式优先。分数越高越优先。
优先级如何计算?
优先级计算为 4 个值:内联样式、ID 数量、类/属性/伪类数量、元素/伪元素数量。
谁优先?
内联 > ID > 类/属性/伪类 > 元素。!important 覆盖所有优先级。
何时使用 !important?
谨慎使用 !important,它使 CSS 难以维护。
通配符选择器影响优先级吗?
不影响,* 的优先级为零。
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How to Use

  1. Enter or paste your data in the input field
  2. Configure any options if available
  3. Click the action button to process
  4. Copy the result to your clipboard

Use Cases

  • Development and debugging workflows
  • Data format conversion
  • Code generation and formatting
  • Quick calculations and validation

FAQ

Is this Css Specificity Calculator tool free to use?
Yes, the Css Specificity Calculator tool is completely free. No registration or payment required.
Is my data secure?
Absolutely. All processing happens client-side in your browser. Your data never leaves your device or is sent to any server.
What formats does the Css Specificity Calculator tool support?
The tool supports all standard formats for CSS styling and formatting. Check the tool interface for specific format options.