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CSS Worksheet: Flexbox Basics

HTML and CSS lesson 18: Flexbox basics · Set 237 · 40 questions
TalentJR

Code tip (Find the free space): Free space = container width − number of boxes × box width. flex-start: all free space after the last box; flex-end: all before the first box; center: half on each side. space-between: free space ÷ (boxes − 1) between each pair, none at the ends.

NameDateTime takenScore ___ / 40
  1. 1.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 480px;
      justify-content: center;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  2. 2.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 250px;
      justify-content: center;
    }
    Inside are 3 boxes, each 50px wide (no margins).
  3. 3.💪 Which justify-content value packs boxes at the start? (a) flex-start (b) center (c) space-between (d) flex-end
  4. 4.What does justify-content: center do? (a) puts boxes in the middle (b) packs boxes at the start (c) packs boxes at the end (d) equal gaps, none at ends
  5. 5.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 190px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 80px wide (no margins).
  6. 6.💪 Which flexbox property sets space between boxes? (a) gap (b) justify-content (c) display: flex (d) flex-direction
  7. 7.What does justify-content: flex-start do? (a) puts boxes in the middle (b) equal gaps, none at ends (c) packs boxes at the start (d) packs boxes at the end
  8. 8.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 560px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  9. 9.💪 Which justify-content value packs boxes at the end? (a) flex-start (b) center (c) flex-end (d) space-between
  10. 10.💪 Which justify-content value puts boxes in the middle? (a) flex-start (b) center (c) space-between (d) flex-end
  11. 11.💪 Which flexbox property picks row or column? (a) flex-direction (b) gap (c) justify-content (d) align-items
  12. 12.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 340px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  13. 13.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 260px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 60px wide (no margins).
  14. 14.💪 Which flexbox property spaces boxes along a row? (a) flex-direction (b) display: flex (c) align-items (d) justify-content
  15. 15.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 400px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 100px wide (no margins).
  16. 16.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 340px;
      justify-content: center;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  17. 17.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 200px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  18. 18.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 420px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 60px wide (no margins).
  19. 19.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 200px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 50px wide (no margins).
  20. 20.💪 Which flexbox property turns on flexbox? (a) align-items (b) flex-direction (c) justify-content (d) display: flex
  21. 21.💪 Which flexbox property lines boxes up across? (a) display: flex (b) flex-direction (c) gap (d) align-items
  22. 22.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 190px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 80px wide (no margins).
  23. 23.What does justify-content: flex-end do? (a) puts boxes in the middle (b) equal gaps, none at ends (c) packs boxes at the start (d) packs boxes at the end
  24. 24.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 410px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  25. 25.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 100px;
      justify-content: center;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  26. 26.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 320px;
      justify-content: center;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  27. 27.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 110px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  28. 28.What does justify-content: space-between do? (a) packs boxes at the start (b) equal gaps, none at ends (c) packs boxes at the end (d) puts boxes in the middle
  29. 29.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 180px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 80px wide (no margins).
  30. 30.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 260px;
      justify-content: center;
    }
    Inside are 3 boxes, each 80px wide (no margins).
  31. 31.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 160px;
      justify-content: space-between;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  32. 32.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 180px;
      justify-content: space-between;
    }
    Inside are 2 boxes, each 60px wide (no margins).
  33. 33.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 240px;
      justify-content: center;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  34. 34.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 130px;
      justify-content: flex-end;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  35. 35.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 360px;
      justify-content: center;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  36. 36.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 160px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  37. 37.💪 Which justify-content value equal gaps, none at ends? (a) flex-end (b) center (c) flex-start (d) space-between
  38. 38.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 160px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  39. 39.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 230px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  40. 40.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 130px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 40px wide (no margins).

Answer key

  1. 80
  2. 50
  3. flex-start
  4. puts boxes in the middle
  5. 30
  6. gap
  7. packs boxes at the start
  8. 80
  9. flex-end
  10. center
  11. flex-direction
  12. 60
  13. 20
  14. justify-content
  15. 50
  16. 70
  17. 40
  18. 60
  19. 50
  20. display: flex
  21. align-items
  22. 30
  23. packs boxes at the end
  24. 30
  25. 10
  26. 80
  27. 30
  28. equal gaps, none at ends
  29. 20
  30. 10
  31. 80
  32. 60
  33. 20
  34. 10
  35. 80
  36. 40
  37. space-between
  38. 60
  39. 70
  40. 10

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