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← CSS
○CSS Rule Demo: Style an Exhibit Card○Exercise: Write Your First CSS Rule○CSS Selectors Demo: Target Exhibit Details○Exercise: Target Exhibit Details○Apply CSS Demo: Three Sources○Exercise: Apply CSS Three Ways○Specificity Demo: Resolve a Style Conflict○Exercise: Resolve Specificity✦Module Quiz
○Color Palette Demo○Color Palette Exercise○Background Layer Demo○Background Layer Exercise○Type Rhythm Demo○Type Rhythm Exercise○Borders and Shadows Demo○Exercise: Borders and Shadows✦Module Quiz
○Box Model Demo: Seed Packet Card○Exercise: Space a Seed Packet○Display Demo: Swap Table Labels○Exercise: Arrange Swap Table Labels○Positioning Demo: Pickup Pin○Exercise: Pin the Pickup Location○Sizing and Overflow Demo○Exercise: Size a Seed-Swap Notice✦Module Quiz
○Advanced Selectors Demo: Book Cart Sign○Exercise: Target a Book Cart Sign○Pseudo-Classes Demo: Night Cart States○Exercise: Style Night Cart States○Pseudo-Elements Demo○Exercise: Add a Book-Quote Mark
○Lantern Market navigation demo○Lantern Market navigation exercise
○Community garden request card demo○Community garden request card exercise
○Flex Direction Demo○Exercise: Flex Direction○Main-Axis Spacing Demo○Exercise: Main-Axis Spacing○Cross-Axis Alignment Demo○Exercise: Cross-Axis Alignment○Wrapping and Flex Items Demo○Exercise: Wrapping and Flex Items○Flexbox Navigation Demo○Exercise: Flexbox Navigation
○Grid Tracks Demo○Exercise: Grid Tracks○Grid Gaps Demo○Exercise: Grid Gaps○Grid Placement Demo○Exercise: Grid Placement○Responsive Grid Demo○Exercise: Responsive Grid
○River radio schedule demo○River radio schedule exercise
○Field note color system demo●Field note color system exercise○Transforms Demo○Exercise: Rotate a Field Note
○Kite festival signal demo○Kite festival signal exercise
○Garden forecast demo○Harbor forecast exercise○Fluid sizing demo○Fluid weather bulletin exercise✦Module Quiz
○Seed inventory table demo○Tool checkout table exercise✦Module Quiz
○Community maker profile demo○Maker profile sheet exercise✦Module Quiz

Field note color system exercise

Mission: Use reusable CSS values to give a field-note card a stable color system.

The HTML supplies another observation card. Its starter CSS already uses var(--accent) on the border and hover button, but the property is not defined yet. Edit only style.css.

Your Task

  1. Define --accent: #e76f51 on :root; the border and button already use it.
  2. Add transition: background-color 180ms ease to the button.

Run Preview after each change, then submit when both visible outcomes match the demo.

Hint 1
1 / 2
HINT 1

Keep the stylesheet linked from the document head.

HINT 2

Change one declaration at a time, then use Run Preview to inspect the result.

Loading editor…
READY
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