diff --git a/vizro-core/changelog.d/20240109_183336_huong_li_nguyen_warning_bootstrap.md b/vizro-core/changelog.d/20240109_183336_huong_li_nguyen_warning_bootstrap.md
new file mode 100644
index 000000000..f1f65e73c
--- /dev/null
+++ b/vizro-core/changelog.d/20240109_183336_huong_li_nguyen_warning_bootstrap.md
@@ -0,0 +1,48 @@
+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+<!--
+### Highlights ✨
+
+- A bullet item for the Highlights ✨ category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Removed
+
+- A bullet item for the Removed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Added
+
+- A bullet item for the Added category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Changed
+
+- A bullet item for the Changed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Deprecated
+
+- A bullet item for the Deprecated category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Fixed
+
+- A bullet item for the Fixed category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
+<!--
+### Security
+
+- A bullet item for the Security category with a link to the relevant PR at the end of your entry, e.g. Enable feature XXX ([#1](https://github.com/mckinsey/vizro/pull/1))
+
+-->
diff --git a/vizro-core/docs/pages/user_guides/assets.md b/vizro-core/docs/pages/user_guides/assets.md
index f6383686a..05315adff 100644
--- a/vizro-core/docs/pages/user_guides/assets.md
+++ b/vizro-core/docs/pages/user_guides/assets.md
@@ -19,6 +19,11 @@ The user-provided `assets` folder thus always takes precedence.
 │   ├── favicon.ico
 ```
 
+!!! warning "Dash Bootstrap Themes"
+
+    Please note that Vizro is currently not compatible with [Dash Bootstrap Themes](https://dash-bootstrap-components.opensource.faculty.ai/docs/themes/).
+    Adding a Bootstrap stylesheet will not work properly inside the Vizro app.
+
 ## Changing the favicon
 To change the default favicon (website icon appearing in the browser tab), add a file named `favicon.ico` to your `assets` folder.
 For more information, see the [Dash documentation](https://dash.plotly.com/external-resources#changing-the-favicon).
diff --git a/vizro-core/docs/pages/user_guides/custom_components.md b/vizro-core/docs/pages/user_guides/custom_components.md
index 5c8903d59..05051db34 100644
--- a/vizro-core/docs/pages/user_guides/custom_components.md
+++ b/vizro-core/docs/pages/user_guides/custom_components.md
@@ -9,6 +9,11 @@ This guide shows you how to create custom components that are completely new, or
 In general, you can create a custom component based on any dash-compatible component (e.g. [dash-core-components](https://dash.plotly.com/dash-core-components),
 [dash-bootstrap-components](https://dash-bootstrap-components.opensource.faculty.ai/), [dash-html-components](https://github.com/plotly/dash/tree/dev/components/dash-html-components), etc.).
 
+!!! warning "Adding a dash-bootstrap component"
+
+    When adding a custom component based on [dash-bootstrap components](https://dash-bootstrap-components.opensource.faculty.ai/)
+    it’s necessary to add custom CSS to ensure proper styling and functionality.
+
 All our components are based on `Dash`, and they are shipped with a set of sensible defaults that can be modified. If you would like to overwrite one of those defaults,
 or if you would like to use additional `args` or `kwargs` of those components, then this is the correct way to include those. You can very easily use any existing attribute of any underlying Dash component with this method.
 
@@ -274,4 +279,5 @@ vm.Page.add_type("components", Jumbotron)
     function or integration they write - especially with regard to leaking any sensitive information or exposing to
     any security threat during implementation.
 
-    By default, all Dash components in Vizro that persist client-side data set [`persistence_type="session"` to use `window.SessionStorage`](https://dash.plotly.com/persistence), which is cleared upon closing the browser. Be careful when using any custom components that persist data beyond this scope: it is your responsibility to ensure compliance with any legal requirements affecting jurisdictions in which your app operates.
+    By default, all Dash components in Vizro that persist client-side data set [`persistence_type="session"` to use `window.SessionStorage`](https://dash.plotly.com/persistence), which is cleared upon closing the browser.
+    Be careful when using any custom components that persist data beyond this scope: it is your responsibility to ensure compliance with any legal requirements affecting jurisdictions in which your app operates.