CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 461 · 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 h1? (a) a class selector (b) an element selector (c) an id selector
2. 2.True or false: #top is an element selector. (a) False (b) True
3. 3.True or false: .star is a class selector. (a) False (b) True
4. 4.True or false: body is a class selector. (a) False (b) True
5. 5.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) .menu (b) p (c) #star (d) .star
6. 6.🎯 Which element does the selector li style? (a) <p id="top"> (b) <span class="red"> (c) <li class="red"> (d) <div>
7. 7.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
8. 8.True or false: img is an element selector. (a) False (b) True
9. 9.True or false: #top is an id selector. (a) False (b) True
10. 10.True or false: #logo is a class selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) #intro (c) .intro (d) .big
12. 12.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #top (b) #note (c) .big (d) div
14. 14.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
16. 16.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .note (b) h2 (c) .menu (d) #intro
18. 18.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .menu (b) h1 (c) .star (d) #top
19. 19.🎯 Which element does the selector .box style? (a) <li id="box"> (b) <li class="star"> (c) <div class="menu"> (d) <li class="box">
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 Which element does the selector #hero style? (a) <span class="note"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
22. 22.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) #hero (b) .hero (c) #top (d) .box
23. 23.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
26. 26.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
27. 27.True or false: .big is an element selector. (a) False (b) True
28. 28.True or false: .note is a class selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) .box (b) #red (c) h1 (d) .end
30. 30.🎯 Which element does the selector li style? (a) <p id="top"> (b) <span class="big"> (c) <li class="big"> (d) <div>
31. 31.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) #hero (b) .hero (c) .star (d) #box
32. 32.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <h2 class="menu"> (c) <li id="logo"> (d) <h1>
33. 33.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) .main (b) #logo (c) #menu (d) .menu
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) h2 (c) .big (d) #top
35. 35.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
36. 36.True or false: .card is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .big (b) #logo (c) .red (d) div
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .menu (b) h1 (c) #main (d) #star
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .red (b) .top (c) #top (d) #big
40. 40.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #

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