添加项目文件。

TightWiki/wwwroot/lib/bootstrap/dist/css/lumen/_variables.scss

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+// Lumen 5.3.3
+// Bootswatch
+
+$theme: "lumen" !default;
+
+//
+// Color system
+//
+
+$white:    #fff !default;
+$gray-100: #f6f6f6 !default;
+$gray-200: #f0f0f0 !default;
+$gray-300: #dee2e6 !default;
+$gray-400: #ced4da !default;
+$gray-500: #adb5bd !default;
+$gray-600: #999 !default;
+$gray-700: #555 !default;
+$gray-800: #333 !default;
+$gray-900: #222 !default;
+$black:    #000 !default;
+
+$blue:    #158cba !default;
+$indigo:  #6610f2 !default;
+$purple:  #6f42c1 !default;
+$pink:    #e83e8c !default;
+$red:     #ff4136 !default;
+$orange:  #fd7e14 !default;
+$yellow:  #ff851b !default;
+$green:   #28b62c !default;
+$teal:    #20c997 !default;
+$cyan:    #75caeb !default;
+
+$primary:       $blue !default;
+$secondary:     $gray-200 !default;
+$success:       $green !default;
+$info:          $cyan !default;
+$warning:       $yellow !default;
+$danger:        $red !default;
+$light:         $gray-100 !default;
+$dark:          $gray-700 !default;
+
+$min-contrast-ratio:   1.75 !default;
+
+// Prefix for :root CSS variables
+
+$variable-prefix:             bs- !default; // Deprecated in v5.2.0 for the shorter `$prefix`
+$prefix:                      $variable-prefix !default;
+
+// Fonts
+
+// stylelint-disable-next-line value-keyword-case
+$font-family-sans-serif:      "Source Sans Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
+
+// Tables
+
+$table-bg-scale:              0% !default;
+
+// Buttons
+
+$btn-font-weight:             700 !default;
+
+// Dropdowns
+
+$dropdown-link-color:         var(--#{$prefix}tertiary-color) !default;
+
+// Navs
+
+$nav-link-color:                    var(--#{$prefix}link-color) !default;
+
+// Pagination
+
+$pagination-color:                  $gray-700 !default;
+$pagination-bg:                     var(--#{$prefix}tertiary-bg) !default;
+$pagination-border-color:           var(--#{$prefix}border-color) !default;
+$pagination-hover-color:            $pagination-color !default;
+$pagination-hover-bg:               $pagination-bg !default;
+$pagination-active-border-color:    darken($primary, 5%) !default;
+$pagination-disabled-color:         $gray-600 !default;
+$pagination-disabled-bg:            $pagination-bg !default;
+
+// Breadcrumbs
+
+$breadcrumb-padding-y:              .375rem !default;
+$breadcrumb-padding-x:              .75rem !default;
+$breadcrumb-bg:                     $pagination-bg !default;
+$breadcrumb-border-radius:          .25rem !default;
+
+// Modals
+
+$modal-content-border-color:        rgba($black, .1) !default;
+
+// Close
+
+$btn-close-color:            $white !default;
+$btn-close-opacity:          .4 !default;
+$btn-close-hover-opacity:    1 !default;