diff --git a/BlazorStudy.Bootstrap5Study/wwwroot/index.html b/BlazorStudy.Bootstrap5Study/wwwroot/index.html
index cbfebb0..1523b94 100644
--- a/BlazorStudy.Bootstrap5Study/wwwroot/index.html
+++ b/BlazorStudy.Bootstrap5Study/wwwroot/index.html
@@ -13,15 +13,22 @@
diff --git a/BlazorStudy.Bootstrap5Study/wwwroot/pages/Utilities/background.html b/BlazorStudy.Bootstrap5Study/wwwroot/pages/Utilities/background.html
index 45d07fa..645bfa5 100644
--- a/BlazorStudy.Bootstrap5Study/wwwroot/pages/Utilities/background.html
+++ b/BlazorStudy.Bootstrap5Study/wwwroot/pages/Utilities/background.html
@@ -12,14 +12,80 @@
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.bg-primary
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.bg-secondary
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.bg-body-secondary
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.bg-body-tertiary
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.bg-body
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.bg-black
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.bg-white
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.bg-transparent
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.bg-primary 渐变
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.bg-primary-subtle 渐变
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.bg-secondary 渐变
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.bg-secondary-subtle 渐变
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.bg-success 渐变
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.bg-success-subtle 渐变
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.bg-dange 渐变r
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.bg-danger-subtle 渐变
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.bg-warning 渐变
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.bg-warning-subtle 渐变
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.bg-info 渐变
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.bg-info-subtle 渐变
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.bg-light 渐变
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.bg-light-subtle 渐变
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.bg-dark 渐变
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.bg-dark-subtle 渐变
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.bg-body-secondary 渐变
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.bg-body-tertiary 渐变
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.bg-body 渐变
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.bg-black 渐变
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.bg-white 渐变
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.bg-transparent 渐变