use\n// this to tweak colors on an as-needed basis. This aesthetic change is based on\n// WebKit's default styles, but applicable to a wider range of browsers. Its\n// usability and accessibility should be taken into account with any change.\n//\n// Example usage: change the default blue border and shadow to white for better\n// contrast against a dark gray background.\n@mixin form-control-focus($ignore-warning: false) {\n  &:focus {\n    color: $input-focus-color;\n    background-color: $input-focus-bg;\n...

}\n}\n","@mixin box-shadow($shadow...) {\n  @if $enable-shadows {\n    $result: ();\n\n    @if (length($shadow) == 1) {\n      // We can pass `@include box-shadow(none);`\n      $result: $shadow;\n    } @else {\n      // Filter to avoid invalid properties for example `box-shadow: none, 1px 1px black;`\n      @for $i from 1 through length($shadow) {\n        @if nth($shadow, $i) != \"none\" {\n          $result: append($result, nth($shadow, $i), \"comma\");\n        }\n      }\n    }\n    @if (length($result) >...