CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 967 · 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.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
2. 2.True or false: img is an id selector. (a) True (b) False
3. 3.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="intro">Hello</h2> (a) #menu (b) #intro (c) .intro (d) .note
5. 5.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
6. 6.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
7. 7.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="end">Hello</h1> (a) h2 (b) #hero (c) .end (d) .note
9. 9.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #hero (b) span (c) .red (d) #big
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) li (b) #top (c) #intro (d) #star
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #logo (b) .big (c) #end (d) h2
13. 13.True or false: li is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .top (b) #intro (c) .big (d) .note
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) .intro (c) #main (d) p
17. 17.True or false: #main is an element selector. (a) True (b) False
18. 18.True or false: #logo is an element selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) h1 (b) p (c) .main (d) #big
20. 20.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="note"> (c) <h1 id="note"> (d) <h1 class="big">
22. 22.True or false: #logo is an id selector. (a) False (b) True
23. 23.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #main (b) .intro (c) #red (d) .red
27. 27.🎯 Which element does the selector #end style? (a) <div class="note"> (b) <li id="end"> (c) <li class="end"> (d) <li id="hero">
28. 28.True or false: .big is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .box style? (a) <div class="star"> (b) <div id="box"> (c) <span class="menu"> (d) <div class="box">
30. 30.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #box (b) #hero (c) .star (d) #end
31. 31.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) h2 (b) .menu (c) h1 (d) .main
33. 33.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="note"> (c) <h1 class="red"> (d) <p class="big">
34. 34.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <div class="note"> (c) <li class="star"> (d) <li id="star">
35. 35.True or false: #end is an id selector. (a) True (b) False
36. 36.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
37. 37.True or false: .note is a class selector. (a) False (b) True
38. 38.True or false: #main is an id selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) h1 (b) #box (c) p (d) .top
40. 40.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .box (b) p (c) .red (d) #red

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