Changes to content, colour scheme and added a new card

[PWilson93-skyscanner]

Summary

• Updated name from Alex to Philip and replaced description with a new one
• Changed colour scheme: maroon background, cream heading and text, dark grey cards
• Added a Glasgow destination card
• Made card grid responsive: stacks on mobile, 2 columns at 600px+, 4 columns at 900px+

Test plan

• Open index.html in a browser and verify name and description are updated
• Check colour scheme looks correct (maroon background, cream text)
• Confirm Glasgow card appears in the grid
• Resize the browser window to verify cards reflow at different breakpoints

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