custom-property-empty-line-before
Require or disallow an empty line before custom properties.
a {
  top: 10px;
                          /* ← */
  --foo: pink;            /* ↑ */
}                         /* ↑ */
/**                          ↑
 *                   This line */
The fix option can automatically fix all of the problems reported by this rule. We recommend to enable indentation rule for better autofixing results with this rule.
Options
string: "always"|"never"
"always"
The following patterns are considered problems:
a {
  top: 10px;
  --foo: pink;
  --bar: red;
}
The following patterns are not considered problems:
a {
  top: 10px;
  --foo: pink;
  --bar: red;
}
"never"
The following patterns are considered problems:
a {
  top: 10px;
  --foo: pink;
  --bar: red;
}
a {
  --foo: pink;
  --bar: red;
}
The following patterns are not considered problems:
a {
  top: 10px;
  --foo: pink;
  --bar: red;
}
a {
  --foo: pink;
  --bar: red;
}
Optional secondary options
except: ["after-comment", "after-custom-property", "first-nested"]
"after-comment"
Reverse the primary option for custom properties that follow a comment.
Shared-line comments do not trigger this option.
For example, with "always":
The following patterns are considered problems:
a {
  --foo: pink;
  /* comment */
  --bar: red;
}
a {
  --foo: pink; /* comment */
  --bar: red;
}
The following patterns are not considered problems:
a {
  --foo: pink;
  /* comment */
  --bar: red;
}
a {
  --foo: pink; /* comment */
  --bar: red;
}
"after-custom-property"
Reverse the primary option for custom properties that follow another custom property.
Shared-line comments do not affect this option.
For example, with "always":
The following patterns are considered problems:
a {
  --foo: pink;
  --bar: red;
}
a {
  --foo: pink; /* comment */
  --bar: red;
}
The following patterns are not considered problems:
a {
  --foo: pink;
  --bar: red;
}
a {
  --foo: pink; /* comment */
  --bar: red;
}
"first-nested"
Reverse the primary option for custom properties that are nested and the first child of their parent node.
For example, with "always":
The following patterns are considered problems:
a {
  --foo: pink;
  --bar: red;
}
The following patterns are not considered problems:
a {
  --foo: pink;
  --bar: red;
}
ignore: ["after-comment", "first-nested", "inside-single-line-block"]
"after-comment"
Ignore custom properties that follow a comment.
For example, with "always":
The following patterns are not considered problems:
a {
  /* comment */
  --foo: pink;
}
"first-nested"
Ignore custom properties that are nested and the first child of their parent node.
For example, with "always":
The following patterns are not considered problems:
a {
  --foo: pink;
  --bar: red;
}
"inside-single-line-block"
Ignore custom properties that are inside single-line blocks.
For example, with "always":
The following patterns are not considered problems:
a { --foo: pink; --bar: red; }