添加项目文件。

TightWiki/wwwroot/lib/bootstrap/dist/css/cerulean/_bootswatch.scss

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+// Cerulean 5.3.3
+// Bootswatch
+
+
+// Variables
+
+$text-shadow: 0 1px 0 rgba(0, 0, 0, .05) !default;
+
+// Mixins
+
+@mixin btn-shadow($color){
+  @include gradient-y-three-colors(tint-color($color, 16%), $color, 60%, shade-color($color, 6%));
+}
+
+@mixin btn-shadow-hover($color){
+  @include gradient-y-three-colors($color, shade-color($color, 5%), 60%, shade-color($color, 15%));
+}
+
+@mixin btn-shadow-active($color){
+  @include gradient-y-three-colors(shade-color($color, 20%), shade-color($color, 20%), 60%, shade-color($color, 30%));
+}
+
+// Navbar
+
+.navbar {
+  @each $color, $value in $theme-colors {
+    &.bg-#{$color} {
+      @include btn-shadow($value);
+    }
+  }
+}
+
+.navbar-brand,
+.nav-link {
+  text-shadow: $text-shadow;
+}
+
+// Buttons
+
+.btn {
+  text-shadow: $text-shadow;
+}
+
+.btn-secondary,
+.btn-outline-secondary {
+  color: $gray-700;
+}
+
+@each $color, $value in $theme-colors {
+  .btn-#{$color} {
+    @include btn-shadow($value);
+  }
+
+  .btn-#{$color}:hover {
+    @include btn-shadow-hover($value);
+  }
+
+  .btn-#{$color}:active {
+    @include btn-shadow-active($value);
+  }
+
+  .btn-check:checked + .btn-#{$color} {
+    @include btn-shadow-active($value);
+  }
+}
+
+// Typography
+
+.text-secondary {
+  color: $gray-500 !important;
+}
+
+.bg-primary,
+.bg-success,
+.bg-info,
+.bg-warning,
+.bg-danger,
+.bg-dark {
+  h1,
+  h2,
+  h3,
+  h4,
+  h5,
+  h6 {
+    color: $white;
+  }
+}
+
+// Navs
+
+.dropdown-menu {
+  .dropdown-header {
+    color: $gray-600;
+  }
+}
+
+// Indicators
+
+.badge {
+  &.bg-secondary,
+  &.bg-light {
+    color: $dark;
+  }
+}

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

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+// Cerulean 5.3.3
+// Bootswatch
+
+$theme: "cerulean" !default;
+
+//
+// Color system
+//
+
+$white:    #fff !default;
+$gray-100: #f8f9fa !default;
+$gray-200: #e9ecef !default;
+$gray-300: #dee2e6 !default;
+$gray-400: #ced4da !default;
+$gray-500: #adb5bd !default;
+$gray-600: #868e96 !default;
+$gray-700: #495057 !default;
+$gray-800: #343a40 !default;
+$gray-900: #212529 !default;
+$black:    #000 !default;
+
+$blue:    #033c73 !default;
+$indigo:  #6610f2 !default;
+$purple:  #6f42c1 !default;
+$pink:    #e83e8c !default;
+$red:     #c71c22 !default;
+$orange:  #fd7e14 !default;
+$yellow:  #dd5600 !default;
+$green:   #73a839 !default;
+$teal:    #20c997 !default;
+$cyan:    #2fa4e7 !default;
+
+$primary:       $cyan !default;
+$secondary:     $gray-200 !default;
+$success:       $green !default;
+$info:          $blue !default;
+$warning:       $yellow !default;
+$danger:        $red !default;
+$light:         $gray-100 !default;
+$dark:          $gray-800 !default;
+
+$min-contrast-ratio:   2.75 !default;
+
+// Body
+
+$body-color:    $gray-700 !default;
+
+// Fonts
+
+$headings-color:         $cyan !default;
+
+// Dropdowns
+
+$dropdown-link-hover-color:     $white !default;
+$dropdown-link-hover-bg:        $primary !default;
+
+// Navbar
+
+$navbar-dark-color:             rgba($white, .8) !default;
+$navbar-dark-hover-color:       $white !default;