# Available Rules
The --fix option on the command line (opens new window) automatically fixes problems reported by rules which have a wrench 🔧 below.
The rules with the following star ⭐️ are included in the plugin:css/recommended config and the plugin:css/standard config.
The rules with the following lipstick 💄 are included in the plugin:css/standard config.
# Possible Errors
| Rule ID | Description | |
|---|---|---|
| css/no-dupe-properties | disallow duplicate properties | ⭐️ |
| css/no-invalid-color-hex | disallow invalid hex colors | ⭐️ |
| css/no-shorthand-property-overrides | disallow shorthand properties that override related longhand properties | ⭐️ |
| css/no-unknown-property | disallow unknown properties | ⭐️ |
| css/no-unknown-unit | disallow unknown units | ⭐️ |
# Best Practices
| Rule ID | Description | |
|---|---|---|
| css/named-color | enforce named colors | 🔧 |
| css/no-length-zero-unit | disallow units for zero lengths | 💄🔧 |
| css/no-useless-color-alpha | disallow unnecessary alpha-channel transparency value | ⭐️🔧 |
| css/prefer-reduce-shorthand-property-box-values | require reduction in box values of shorthand property | 💄🔧 |
# Stylistic Issues
| Rule ID | Description | |
|---|---|---|
| css/color-hex-style | enforce hex color style | 💄🔧 |
| css/no-number-trailing-zeros | disallow trailing zeros in numbers. | 💄🔧 |
| css/number-leading-zero | require or disallow a leading zero for fractional numbers less than 1 | 💄🔧 |
| css/property-casing | enforce specific casing for CSS properties | 💄🔧 |