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CSS Worksheet: Flexbox Basics

HTML and CSS lesson 18: Flexbox basics · Set 255 · 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 wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 410px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  2. 2.💪 Which flexbox property picks row or column? (a) gap (b) align-items (c) justify-content (d) flex-direction
  3. 3.💪 Which justify-content value packs boxes at the start? (a) flex-end (b) space-between (c) center (d) flex-start
  4. 4.💪 Which justify-content value packs boxes at the end? (a) flex-start (b) center (c) flex-end (d) space-between
  5. 5.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 250px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  6. 6.What does justify-content: flex-start do? (a) packs boxes at the end (b) puts boxes in the middle (c) packs boxes at the start (d) equal gaps, none at ends
  7. 7.💪 Which justify-content value puts boxes in the middle? (a) flex-start (b) space-between (c) flex-end (d) center
  8. 8.💪 Which flexbox property sets space between boxes? (a) display: flex (b) gap (c) flex-direction (d) align-items
  9. 9.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 100px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  10. 10.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 210px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  11. 11.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 140px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  12. 12.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 320px;
      justify-content: center;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  13. 13.💪 Which flexbox property spaces boxes along a row? (a) flex-direction (b) align-items (c) justify-content (d) gap
  14. 14.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 270px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  15. 15.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 110px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  16. 16.💪 Which flexbox property lines boxes up across? (a) align-items (b) gap (c) display: flex (d) justify-content
  17. 17.💪 Which flexbox property turns on flexbox? (a) gap (b) display: flex (c) align-items (d) justify-content
  18. 18.💪 Which justify-content value equal gaps, none at ends? (a) center (b) space-between (c) flex-end (d) flex-start
  19. 19.What does justify-content: flex-end do? (a) packs boxes at the start (b) packs boxes at the end (c) puts boxes in the middle (d) equal gaps, none at ends
  20. 20.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 240px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  21. 21.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 380px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 80px wide (no margins).
  22. 22.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 200px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 60px wide (no margins).
  23. 23.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 250px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 60px wide (no margins).
  24. 24.What does justify-content: center do? (a) packs boxes at the end (b) packs boxes at the start (c) equal gaps, none at ends (d) puts boxes in the middle
  25. 25.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 180px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  26. 26.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 290px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  27. 27.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 280px;
      justify-content: center;
    }
    Inside are 2 boxes, each 60px wide (no margins).
  28. 28.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 500px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  29. 29.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 460px;
      justify-content: center;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  30. 30.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 220px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  31. 31.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 260px;
      justify-content: space-between;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  32. 32.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 230px;
      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: 360px;
      justify-content: flex-end;
    }
    Inside are 3 boxes, each 100px wide (no margins).
  34. 34.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 370px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  35. 35.What does justify-content: space-between 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
  36. 36.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 220px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  37. 37.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 380px;
      justify-content: space-between;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  38. 38.💪 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).
  39. 39.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 430px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  40. 40.💪 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).

Answer key

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

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