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CSS Worksheet: Flexbox Basics

HTML and CSS lesson 18: Flexbox basics · Set 800 · 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.💪 Which flexbox property sets space between boxes? (a) align-items (b) flex-direction (c) display: flex (d) gap
  2. 2.💪 Which justify-content value packs boxes at the start? (a) center (b) space-between (c) flex-start (d) flex-end
  3. 3.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 480px;
      justify-content: center;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  4. 4.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 490px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  5. 5.💪 Which flexbox property spaces boxes along a row? (a) justify-content (b) gap (c) align-items (d) display: flex
  6. 6.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 310px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 60px wide (no margins).
  7. 7.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 530px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  8. 8.💪 Which justify-content value packs boxes at the end? (a) flex-end (b) flex-start (c) center (d) space-between
  9. 9.💪 Which justify-content value puts boxes in the middle? (a) flex-start (b) space-between (c) center (d) flex-end
  10. 10.What does justify-content: flex-start do? (a) packs boxes at the start (b) packs boxes at the end (c) equal gaps, none at ends (d) puts boxes in the middle
  11. 11.💪 Which justify-content value equal gaps, none at ends? (a) flex-start (b) flex-end (c) space-between (d) center
  12. 12.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 150px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  13. 13.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 230px;
      justify-content: flex-end;
    }
    Inside are 3 boxes, each 60px wide (no margins).
  14. 14.💪 Which flexbox property lines boxes up across? (a) flex-direction (b) justify-content (c) align-items (d) display: flex
  15. 15.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 120px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  16. 16.What does justify-content: flex-end do? (a) equal gaps, none at ends (b) packs boxes at the start (c) packs boxes at the end (d) puts boxes in the middle
  17. 17.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 140px;
      justify-content: center;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  18. 18.What does justify-content: space-between do? (a) equal gaps, none at ends (b) puts boxes in the middle (c) packs boxes at the end (d) packs boxes at the start
  19. 19.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 120px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  20. 20.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 230px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  21. 21.What does justify-content: center do? (a) packs boxes at the start (b) puts boxes in the middle (c) packs boxes at the end (d) equal gaps, none at ends
  22. 22.💪 Which flexbox property turns on flexbox? (a) display: flex (b) flex-direction (c) justify-content (d) gap
  23. 23.💪 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).
  24. 24.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 280px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  25. 25.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 120px;
      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: 230px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  27. 27.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 190px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 50px wide (no margins).
  28. 28.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 160px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  29. 29.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 220px;
      justify-content: center;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  30. 30.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 120px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  31. 31.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 360px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  32. 32.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 190px;
      justify-content: center;
    }
    Inside are 3 boxes, each 50px wide (no margins).
  33. 33.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 380px;
      justify-content: center;
    }
    Inside are 3 boxes, each 80px wide (no margins).
  34. 34.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 310px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 100px wide (no margins).
  35. 35.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 400px;
      justify-content: center;
    }
    Inside are 3 boxes, each 100px wide (no margins).
  36. 36.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 260px;
      justify-content: center;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  37. 37.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 410px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  38. 38.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 200px;
      justify-content: center;
    }
    Inside are 2 boxes, each 80px wide (no margins).
  39. 39.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 110px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  40. 40.💪 Which flexbox property picks row or column? (a) display: flex (b) align-items (c) gap (d) flex-direction

Answer key

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

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