CSS Worksheet: Flexbox Basics
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.💪 Which justify-content value equal gaps, none at ends? (a) center (b) flex-start (c) space-between (d) flex-end
-
2.💪 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). - 3.💪 Which flexbox property spaces boxes along a row? (a) align-items (b) justify-content (c) gap (d) flex-direction
-
4.💪 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). -
5.💪 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 50px wide (no margins). - 6.💪 Which justify-content value puts boxes in the middle? (a) space-between (b) flex-end (c) center (d) flex-start
-
7.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 170px;
justify-content: flex-end;
}
Inside are 2 boxes, each 80px wide (no margins). -
8.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 340px;
justify-content: center;
}
Inside are 3 boxes, each 80px wide (no margins). - 9.💪 Which flexbox property turns on flexbox? (a) display: flex (b) justify-content (c) gap (d) align-items
- 10.What does justify-content: center do? (a) packs boxes at the end (b) equal gaps, none at ends (c) packs boxes at the start (d) puts boxes in the middle
- 11.What does justify-content: flex-start do? (a) packs boxes at the start (b) puts boxes in the middle (c) equal gaps, none at ends (d) packs boxes at the end
-
12.💪 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). -
13.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 140px;
justify-content: flex-end;
}
Inside are 3 boxes, each 40px wide (no margins). - 14.What does justify-content: space-between do? (a) packs boxes at the end (b) equal gaps, none at ends (c) packs boxes at the start (d) puts boxes in the middle
-
15.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 160px;
justify-content: center;
}
Inside are 3 boxes, each 40px wide (no margins). - 16.💪 Which justify-content value packs boxes at the start? (a) space-between (b) flex-start (c) flex-end (d) center
-
17.💪 How much empty space (px) is left after the last box?
.row {
display: flex;
width: 330px;
justify-content: flex-start;
}
Inside are 3 boxes, each 100px wide (no margins). -
18.💪 How wide (px) is each gap between two boxes?
.row {
display: flex;
width: 440px;
justify-content: space-between;
}
Inside are 4 boxes, each 80px wide (no margins). -
19.💪 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). - 20.💪 Which flexbox property picks row or column? (a) align-items (b) display: flex (c) flex-direction (d) justify-content
-
21.💪 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). - 22.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
-
23.💪 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). -
24.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 190px;
justify-content: flex-end;
}
Inside are 3 boxes, each 40px wide (no margins). -
25.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 230px;
justify-content: flex-end;
}
Inside are 2 boxes, each 80px wide (no margins). - 26.💪 Which flexbox property lines boxes up across? (a) display: flex (b) gap (c) justify-content (d) align-items
-
27.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 90px;
justify-content: flex-end;
}
Inside are 2 boxes, each 40px wide (no margins). - 28.💪 Which flexbox property sets space between boxes? (a) flex-direction (b) justify-content (c) gap (d) align-items
-
29.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 200px;
justify-content: flex-end;
}
Inside are 3 boxes, each 50px wide (no margins). -
30.💪 How wide (px) is each gap between two boxes?
.row {
display: flex;
width: 640px;
justify-content: space-between;
}
Inside are 4 boxes, each 100px wide (no margins). -
31.💪 How much empty space (px) is left after the last box?
.row {
display: flex;
width: 240px;
justify-content: flex-start;
}
Inside are 2 boxes, each 100px wide (no margins). -
32.💪 How much empty space (px) is left after the last box?
.row {
display: flex;
width: 250px;
justify-content: flex-start;
}
Inside are 4 boxes, each 50px wide (no margins). -
33.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 240px;
justify-content: flex-end;
}
Inside are 2 boxes, each 80px wide (no margins). -
34.💪 How much empty space (px) is left after the last box?
.row {
display: flex;
width: 230px;
justify-content: flex-start;
}
Inside are 4 boxes, each 50px wide (no margins). -
35.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 330px;
justify-content: flex-end;
}
Inside are 3 boxes, each 100px wide (no margins). -
36.💪 How much empty space (px) is before the first box?
.row {
display: flex;
width: 320px;
justify-content: center;
}
Inside are 3 boxes, each 100px wide (no margins). - 37.💪 Which justify-content value packs boxes at the end? (a) flex-start (b) center (c) space-between (d) flex-end
-
38.💪 How wide (px) is each gap between two boxes?
.row {
display: flex;
width: 610px;
justify-content: space-between;
}
Inside are 4 boxes, each 100px wide (no margins). -
39.💪 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). -
40.💪 How much empty space (px) is left after the last box?
.row {
display: flex;
width: 180px;
justify-content: flex-start;
}
Inside are 3 boxes, each 40px wide (no margins).
Answer key
- space-between
- 30
- justify-content
- 10
- 60
- center
- 10
- 50
- display: flex
- puts boxes in the middle
- packs boxes at the start
- 20
- 20
- equal gaps, none at ends
- 20
- flex-start
- 30
- 40
- 40
- flex-direction
- 30
- packs boxes at the end
- 10
- 70
- 70
- align-items
- 10
- gap
- 50
- 80
- 40
- 50
- 80
- 30
- 30
- 10
- flex-end
- 70
- 80
- 60
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