CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 754 · 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 #main? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
3. 3.True or false: #top is an element selector. (a) True (b) False
4. 4.True or false: .big is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) li (b) div (c) .red (d) #big
6. 6.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
7. 7.True or false: #top is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <h2 class="note"> (d) <p class="note">
9. 9.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <p class="menu"> (c) <span id="box"> (d) <span class="box">
11. 11.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
12. 12.True or false: #main is a class selector. (a) False (b) True
13. 13.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="box"> (c) <li> (d) <h2 class="box">
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) li (b) .red (c) #main (d) h2
15. 15.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
16. 16.True or false: .card is a class selector. (a) False (b) True
17. 17.True or false: .star is a class selector. (a) False (b) True
18. 18.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) #logo (b) div (c) .red (d) .big
20. 20.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .hero (b) .menu (c) #star (d) h2
23. 23.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="red"> (c) <h2 id="intro"> (d) <h2 id="main">
24. 24.True or false: .note is an id selector. (a) False (b) True
25. 25.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #top (b) .red (c) span (d) #hero
26. 26.🎯 Which element does the selector .red style? (a) <li class="box"> (b) <div class="star"> (c) <li id="red"> (d) <li class="red">
27. 27.True or false: p is an id selector. (a) True (b) False
28. 28.🎯 Which element does the selector span style? (a) <span class="red"> (b) <p> (c) <h2 id="top"> (d) <h1 class="red">
29. 29.True or false: li is an id selector. (a) False (b) True
30. 30.True or false: #end is a class selector. (a) False (b) True
31. 31.True or false: .star is an element selector. (a) True (b) False
32. 32.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
33. 33.🎯 Which element does the selector .menu style? (a) <div class="note"> (b) <div class="menu"> (c) <div id="menu"> (d) <span class="big">
34. 34.🎯 Which element does the selector .red style? (a) <span class="red"> (b) <span id="red"> (c) <p class="star"> (d) <span class="box">
35. 35.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .star (b) .menu (c) #intro (d) .top
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .top (b) #intro (c) .red (d) h2
37. 37.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #big (b) h2 (c) .intro (d) .big
39. 39.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <span class="note"> (d) <p id="end">
40. 40.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="red"> (d) <p class="big">

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