添加项目文件。

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

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+// Sandstone 5.3.3
+// Bootswatch
+
+
+// Variables
+
+$web-font-path: "https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap" !default;
+@if $web-font-path {
+  @import url("#{$web-font-path}");
+}
+
+// Navbar
+
+.sandstone {
+  font-size: 13px;
+  font-weight: 500;
+  line-height: 22px;
+  text-transform: uppercase;
+}
+
+.navbar {
+  .nav-link {
+    @extend .sandstone;
+  }
+
+  &-form input,
+  &-form .form-control {
+    border: none;
+  }
+}
+
+// Buttons
+
+.btn {
+  @extend .sandstone;
+
+  &:hover {
+    border-color: transparent;
+  }
+
+  &-success,
+  &-warning {
+    color: $white;
+  }
+}
+
+// Tables
+
+.table {
+  .thead-dark th {
+    background-color: $dark;
+  }
+}
+
+// Forms
+
+input,
+.form-control {
+  @include box-shadow(none);
+
+  &:focus {
+    @include box-shadow(none);
+  }
+}
+
+// Navs
+
+.nav-tabs {
+  .nav-link {
+    @extend .sandstone;
+    background-color: $gray-200;
+    border-color: $gray-300;
+  }
+
+  .nav-link,
+  .nav-link:hover,
+  .nav-link:focus {
+    color: $gray-600;
+  }
+
+  .nav-link.disabled,
+  .nav-link.disabled:hover,
+  .nav-link.disabled:focus {
+    color: $nav-link-disabled-color;
+    background-color: $gray-200;
+    border-color: $gray-300;
+  }
+}
+
+.nav-pills {
+  .nav-link {
+    @extend .sandstone;
+    color: $gray-600;
+    border: 1px solid transparent;
+  }
+
+  .nav-link.active,
+  .nav-link:hover,
+  .nav-link:focus {
+    background-color: $gray-200;
+    border-color: $gray-300;
+  }
+
+  .nav-link.disabled,
+  .nav-link.disabled:hover {
+    color: $gray-300;
+    background-color: transparent;
+    border-color: transparent;
+  }
+}
+
+
+.breadcrumb {
+  @extend .sandstone;
+  border: 1px solid $gray-300;
+}
+
+.pagination {
+  @extend .sandstone;
+
+  a:hover {
+    text-decoration: none;
+  }
+}
+
+.dropdown-menu {
+  .dropdown-item {
+    @extend .sandstone;
+  }
+}
+
+// Indicators
+
+.alert {
+  color: $white;
+
+  a,
+  .alert-link {
+    color: $white;
+    text-decoration: underline;
+  }
+
+  &-primary {
+    &,
+    > th,
+    > td {
+      background-color: $primary;
+    }
+  }
+
+  &-secondary {
+    &,
+    > th,
+    > td {
+      background-color: $secondary;
+    }
+  }
+
+  &-success {
+    &,
+    > th,
+    > td {
+      background-color: $success;
+    }
+  }
+
+  &-info {
+    &,
+    > th,
+    > td {
+      background-color: $info;
+    }
+  }
+
+  &-danger {
+    &,
+    > th,
+    > td {
+      background-color: $danger;
+    }
+  }
+
+  &-warning {
+    &,
+    > th,
+    > td {
+      background-color: $warning;
+    }
+  }
+
+  &-dark {
+    &,
+    > th,
+    > td {
+      background-color: $dark;
+    }
+  }
+
+  &-light {
+    &,
+    > th,
+    > td {
+      background-color: $light;
+    }
+
+    &,
+    a:not(.btn),
+    .alert-link {
+      color: $body-color;
+    }
+  }
+}
+
+.badge {
+  &.bg-light {
+    color: $dark;
+  }
+}
+
+.tooltip {
+  @extend .sandstone;
+}
+
+// Containers
+
+.modal,
+.toast,
+.offcanvas {
+  .btn-close {
+    background-image: escape-svg(url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='#{$gray-300}'><path d='M.293.293a1 1 0 0 1 1.414 0L8 6.586 14.293.293a1 1 0 1 1 1.414 1.414L9.414 8l6.293 6.293a1 1 0 0 1-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 0 1-1.414-1.414L6.586 8 .293 1.707a1 1 0 0 1 0-1.414z'/></svg>"));
+  }
+}

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

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+// Sandstone 5.3.3
+// Bootswatch
+
+$theme: "sandstone" !default;
+
+//
+// Color system
+//
+
+$white:    #fff !default;
+$gray-100: #f8f9fa !default;
+$gray-200: #f8f5f0 !default;
+$gray-300: #dfd7ca !default;
+$gray-400: #ced4da !default;
+$gray-500: #98978b !default;
+$gray-600: #8e8c84 !default;
+$gray-700: #495057 !default;
+$gray-800: #3e3f3a !default;
+$gray-900: #212529 !default;
+$black:    #000 !default;
+
+$blue:    #325d88 !default;
+$indigo:  #6610f2 !default;
+$purple:  #6f42c1 !default;
+$pink:    #e83e8c !default;
+$red:     #d9534f !default;
+$orange:  #f47c3c !default;
+$yellow:  #ffc107 !default;
+$green:   #93c54b !default;
+$teal:    #20c997 !default;
+$cyan:    #29abe0 !default;
+
+$primary:       $blue !default;
+$secondary:     $gray-600 !default;
+$success:       $green !default;
+$info:          $cyan !default;
+$warning:       $orange !default;
+$danger:        $red !default;
+$light:         $gray-200 !default;
+$dark:          $gray-800 !default;
+
+$min-contrast-ratio:   2 !default;
+
+// Body
+
+$body-color:                $gray-800 !default;
+
+// Links
+
+$link-color:                $success !default;
+
+// Fonts
+
+// stylelint-disable-next-line value-keyword-case
+$font-family-sans-serif:      Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol" !default;
+$headings-font-weight:        400 !default;
+
+// Dropdowns
+
+$dropdown-link-color:               $gray-600 !default;
+$dropdown-link-hover-color:         $dropdown-link-color !default;
+$dropdown-link-hover-bg:            $gray-200 !default;
+$dropdown-link-active-color:        $dropdown-link-color !default;
+$dropdown-link-active-bg:           $dropdown-link-hover-bg !default;
+
+// Navs
+
+$nav-link-padding-x:                .9rem !default;
+$nav-link-disabled-color:           $gray-300 !default;
+$nav-tabs-border-color:             $gray-300 !default;
+$nav-tabs-link-hover-border-color:  $gray-300 !default;
+$nav-tabs-link-active-bg:           $white !default;
+$nav-pills-link-active-color:       $gray-600 !default;
+$nav-pills-link-active-bg:          $gray-200 !default;
+
+// Navbar
+
+// Pagination
+
+$pagination-color:                  $gray-600 !default;
+$pagination-bg:                     $gray-200 !default;
+$pagination-border-color:           $gray-300 !default;
+$pagination-hover-color:            $pagination-color !default;
+$pagination-active-color:           $pagination-color !default;
+$pagination-active-bg:              $gray-300 !default;
+$pagination-active-border-color:    $gray-300 !default;
+$pagination-disabled-color:         $gray-300 !default;
+$pagination-disabled-bg:            $gray-200 !default;
+$pagination-disabled-border-color:  $pagination-border-color !default;
+
+// Cards
+
+$card-border-color:                 rgba($gray-300, .75) !default;
+$card-cap-bg:                       rgba($gray-200, .25) !default;
+
+// Popovers
+
+$popover-header-bg:                 $gray-200 !default;
+
+// Modals
+
+$modal-content-border-color:        $gray-300 !default;
+$modal-header-border-color:         $modal-content-border-color !default;
+
+// Progress bars
+
+$progress-bg:                       $gray-300 !default;
+$progress-border-radius:            10px !default;
+$progress-bar-color:                $primary !default;
+
+// List group
+
+$list-group-border-color:           $gray-300 !default;
+$list-group-hover-bg:               $gray-200 !default;
+$list-group-active-color:           $body-color !default;
+$list-group-active-bg:              $gray-200 !default;
+$list-group-active-border-color:    $gray-300 !default;
+$list-group-disabled-color:         $gray-500 !default;
+$list-group-disabled-bg:            $white !default;
+$list-group-action-color:           $list-group-active-color !default;
+$list-group-action-active-color:    $list-group-active-color !default;
+$list-group-action-active-bg:       $gray-300 !default;
+
+// Breadcrumbs
+
+$breadcrumb-padding-y:              .375rem !default;
+$breadcrumb-padding-x:              .75rem !default;
+$breadcrumb-bg:                     $pagination-bg !default;
+$breadcrumb-border-radius:          .25rem !default;
+
+// Close
+
+$btn-close-color:            $white !default;
+$btn-close-opacity:          .8 !default;
+$btn-close-hover-opacity:    1 !default;