Rules that were disabled initially and need to be fixed are listed below. Work will be split between @Universal_Omega and @SamanthaNguyen.
NOTE: Do **not** try to fix everything at once! One patch at a time for a group of related rules, and should be kept small.
```
at-rule-empty-line-before
block-closing-brace-empty-line-before
block-opening-brace-newline-after
block-closing-brace-newline-before
block-opening-brace-newline-before
block-opening-brace-space-before
color-hex-case
color-hex-length
color-named
comment-whitespace-inside
declaration-colon-space-after
declaration-block-no-duplicate-properties
declaration-block-no-redundant-longhand-properties
declaration-block-semicolon-newline-after
declaration-block-trailing-semicolon
declaration-no-important
declaration-property-value-blacklist
font-family-name-quotes
font-weight-notation
function-comma-space-after
function-blacklist
function-parentheses-space-inside
function-url-quotes
indentation
length-zero-no-unit
max-empty-lines
media-feature-colon-space-after
media-feature-parentheses-space-inside
no-descending-specificity
no-duplicate-selectors
no-eol-whitespace
no-missing-end-of-source-newline
number-leading-zero
rule-empty-line-before
selector-attribute-brackets-space-inside
selector-combinator-space-after
selector-list-comma-newline-after
selector-list-comma-space-after
selector-max-id
selector-no-vendor-prefix
selector-pseudo-class-parentheses-space-inside
selector-pseudo-element-colon-notation
string-quotes
unit-blacklist
value-keyword-case
value-list-comma-space-after
```