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CSS Worksheet: Flexbox Basics

HTML and CSS lesson 18: Flexbox basics · Set 205 · 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: 150px;
      justify-content: flex-end;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  2. 2.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 170px;
      justify-content: flex-end;
    }
    Inside are 3 boxes, each 50px wide (no margins).
  3. 3.What does justify-content: center 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
  4. 4.💪 Which justify-content value packs boxes at the end? (a) center (b) space-between (c) flex-end (d) flex-start
  5. 5.💪 Which flexbox property spaces boxes along a row? (a) flex-direction (b) align-items (c) gap (d) justify-content
  6. 6.💪 Which justify-content value packs boxes at the start? (a) space-between (b) flex-start (c) center (d) flex-end
  7. 7.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 180px;
      justify-content: center;
    }
    Inside are 3 boxes, each 40px wide (no margins).
  8. 8.💪 Which flexbox property sets space between boxes? (a) gap (b) display: flex (c) justify-content (d) flex-direction
  9. 9.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 470px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 100px wide (no margins).
  10. 10.💪 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).
  11. 11.💪 How wide (px) is each gap between two boxes?
    .row {
      display: flex;
      width: 100px;
      justify-content: space-between;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  12. 12.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 220px;
      justify-content: center;
    }
    Inside are 4 boxes, each 50px wide (no margins).
  13. 13.What does justify-content: flex-end 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
  14. 14.What does justify-content: flex-start do? (a) equal gaps, none at ends (b) puts boxes in the middle (c) packs boxes at the start (d) packs boxes at the end
  15. 15.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 220px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  16. 16.💪 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).
  17. 17.💪 Which flexbox property turns on flexbox? (a) display: flex (b) gap (c) flex-direction (d) align-items
  18. 18.💪 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).
  19. 19.💪 Which flexbox property lines boxes up across? (a) flex-direction (b) align-items (c) justify-content (d) gap
  20. 20.💪 Which justify-content value puts boxes in the middle? (a) flex-end (b) center (c) flex-start (d) space-between
  21. 21.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 140px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  22. 22.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 170px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  23. 23.What does justify-content: space-between 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
  24. 24.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 380px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 80px wide (no margins).
  25. 25.💪 Which justify-content value equal gaps, none at ends? (a) flex-end (b) space-between (c) flex-start (d) center
  26. 26.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 160px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 60px wide (no margins).
  27. 27.💪 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).
  28. 28.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 210px;
      justify-content: flex-start;
    }
    Inside are 3 boxes, each 60px wide (no margins).
  29. 29.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 280px;
      justify-content: center;
    }
    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: 280px;
      justify-content: center;
    }
    Inside are 3 boxes, each 60px 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 80px wide (no margins).
  32. 32.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 130px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 50px wide (no margins).
  33. 33.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 140px;
      justify-content: center;
    }
    Inside are 2 boxes, each 60px wide (no margins).
  34. 34.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 460px;
      justify-content: center;
    }
    Inside are 3 boxes, each 100px wide (no margins).
  35. 35.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 160px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 40px wide (no margins).
  36. 36.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 260px;
      justify-content: flex-start;
    }
    Inside are 4 boxes, each 60px wide (no margins).
  37. 37.💪 Which flexbox property picks row or column? (a) flex-direction (b) align-items (c) gap (d) display: flex
  38. 38.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 190px;
      justify-content: flex-end;
    }
    Inside are 4 boxes, each 40px wide (no margins).
  39. 39.💪 How much empty space (px) is left after the last box?
    .row {
      display: flex;
      width: 280px;
      justify-content: flex-start;
    }
    Inside are 2 boxes, each 100px wide (no margins).
  40. 40.💪 How much empty space (px) is before the first box?
    .row {
      display: flex;
      width: 280px;
      justify-content: flex-end;
    }
    Inside are 2 boxes, each 100px wide (no margins).

Answer key

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

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