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PL-900 Custom CSS in Power Pages Practice Question
Which TWO of the following are valid ways to customize the appearance of a Power Pages site? (Choose two.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add custom CSS via the portal's CSS editor
Option B is correct because Power Pages provides a built-in CSS editor (Styling workspace) where you can add custom CSS rules to override the default theme styles and control colors, fonts, spacing, and other visual properties of the site. Option C is correct because page templates in Power Pages define the HTML structure and layout of pages, so editing a template lets you modify the layout and appearance of every page based on it. Option A is incorrect because Power Automate is a workflow automation service and cannot change a site's theme. Option D is incorrect because embedding Power BI tiles adds data visualizations, not customization of the site's appearance. Option E is incorrect because adding a canvas app embeds app functionality into a page rather than customizing the site's look and feel.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Power Automate to change the site theme
Why it's wrong here
Power Automate orchestrates flows and business processes; it cannot alter a site's theme, styling or layout. It is tempting because it automates portal actions, but appearance changes require the styling workspace, themes and CSS, not a cloud flow.
- ✓
Add custom CSS via the portal's CSS editor
Why this is correct
The portal's CSS editor injects custom stylesheets that override the default theme, letting you restyle layout, colours and typography. This is a supported customisation path for changing a Power Pages site's visual appearance without altering its underlying content.
- ✓
Edit page templates to modify layout
Why this is correct
Page templates in Power Pages control the HTML structure and layout of rendered pages, so editing them changes the site's visual presentation directly. This satisfies the requirement to customise appearance, unlike options that alter data, security or authentication behaviour.
- ✗
Embed Power BI tiles
Why it's wrong here
Embedding Power BI tiles adds analytics visuals, not site styling; it changes page content rather than theme, colours or layout. It is tempting because Power BI embedding genuinely delivers interactive reporting inside a page, which is the right choice when the requirement is data visualisation, not appearance customisation.
- ✗
Add a Power Apps canvas app to a page
Why it's wrong here
Embedding a canvas app adds interactive functionality within a page; it does not alter the site's visual styling. It is tempting because canvas apps are the correct choice when a page must run custom data-entry or business logic that model-driven forms cannot deliver, but appearance customisation is not that requirement.
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