CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 19 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which CSS selector matches this element?
   <div class="star" id="logo">Hello</div> (a) .logo (b) .menu (c) .star (d) #star
2. 2.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) #big (b) .red (c) span (d) div
3. 3.🎯 Which element does the selector div style? (a) <div class="box"> (b) <span> (c) <h1 id="intro"> (d) <p class="box">
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="top">Hello</h1> (a) #top (b) #menu (c) h2 (d) .top
5. 5.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
6. 6.🎯 Which CSS selector matches this element?
   <span class="big" id="top">Hello</span> (a) p (b) .red (c) span (d) #big
7. 7.True or false: .card is an id selector. (a) True (b) False
8. 8.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <div class="star" id="top">Hello</div> (a) .star (b) #intro (c) .menu (d) #star
10. 10.True or false: .star is an id selector. (a) True (b) False
11. 11.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
12. 12.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
13. 13.True or false: p is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #box (b) #end (c) .end (d) h1
15. 15.True or false: #hero is a class selector. (a) False (b) True
16. 16.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h2 class="box"> (d) <h1 id="logo">
18. 18.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .end (b) #end (c) #hero (d) #big
19. 19.True or false: #end is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) #intro (c) .big (d) #note
25. 25.True or false: h1 is an id selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) .menu (b) li (c) #star (d) .star
27. 27.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) p (b) h1 (c) .big (d) .top
29. 29.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span id="big"> (c) <span class="big"> (d) <span class="red">
31. 31.True or false: #main is an id selector. (a) True (b) False
32. 32.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="hero"> (c) <span class="star"> (d) <h1 class="star">
34. 34.True or false: img is an element selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #note (b) #logo (c) p (d) .big
36. 36.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
38. 38.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #menu (b) .intro (c) #main (d) .menu
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #main (b) .main (c) #note (d) #logo
40. 40.True or false: .menu is an element selector. (a) True (b) False

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