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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

Harbor forecast exercise

The Harbor weather cards start in a grid, but they need an explicit one-column base and a wider layout. The HTML and the card styling are already supplied; edit only style.css.

In the preceding garden forecast, a media query changed the grid's columns when the viewport grew. Here use a 42rem breakpoint instead. You can resize the preview to compare the two states.

Your Task

  1. Set .forecast to one 1fr grid column by default, so the cards stack on a narrow screen.
  2. Inside @media (min-width: 42rem), set .forecast to repeat(2, 1fr) columns, so the cards share a row on a wide screen.

Submit after checking the narrow and wide views. The next lesson explores sizing that changes continuously rather than at one breakpoint.

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