CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 170 · 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 .card? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="hero">Hello</li> (a) li (b) .hero (c) .red (d) #big
3. 3.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
6. 6.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <p id="intro"> (c) <p id="main"> (d) <h1 class="menu">
7. 7.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <h2 class="box"> (c) <li class="menu"> (d) <h2 class="star">
8. 8.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span id="big"> (c) <p class="box"> (d) <span class="big">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) #main (b) .intro (c) h1 (d) #note
10. 10.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .big (b) #intro (c) #big (d) .red
11. 11.True or false: .star is an id selector. (a) False (b) True
12. 12.True or false: .star is a class selector. (a) True (b) False
13. 13.True or false: body is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #big (b) .end (c) div (d) li
15. 15.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) h1 (b) .intro (c) #main (d) p
16. 16.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #hero (b) #end (c) .end (d) .box
17. 17.🎯 Which element does the selector #main style? (a) <span class="star"> (b) <div class="main"> (c) <div id="main"> (d) <div id="logo">
18. 18.True or false: img is an id selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) li (b) .menu (c) #top (d) #menu
20. 20.True or false: .note is a class selector. (a) False (b) True
21. 21.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
22. 22.True or false: .card is an id selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) span (b) .box (c) #red (d) div
24. 24.True or false: #hero is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .star (b) .intro (c) .box (d) #box
26. 26.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) #hero (b) .hero (c) #red (d) .box
27. 27.True or false: .card is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) .end (b) .menu (c) #hero (d) #end
29. 29.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <p class="note"> (c) <span id="star"> (d) <span class="menu">
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #menu (b) .intro (c) #intro (d) #main
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) #top (b) h1 (c) .big (d) h2
33. 33.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
35. 35.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) #main (b) #intro (c) .intro (d) .star
36. 36.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .top (b) span (c) p (d) #intro
37. 37.True or false: p is an element selector. (a) True (b) False
38. 38.True or false: #logo is a class selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) .red (b) #main (c) .intro (d) #intro
40. 40.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector

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