CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 782 · 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 .note? (a) an element selector (b) a class selector (c) an id selector
2. 2.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
3. 3.True or false: #end is a class selector. (a) False (b) True
4. 4.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="top"> (c) <li class="star"> (d) <div>
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
7. 7.🎯 Which element does the selector div style? (a) <div class="red"> (b) <h1 id="logo"> (c) <span> (d) <p class="red">
8. 8.True or false: .card is an id selector. (a) True (b) False
9. 9.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
10. 10.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) h1 (b) .main (c) p (d) #logo
11. 11.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #menu (b) .note (c) #intro (d) h2
14. 14.🎯 Which sign starts an id selector? (a) & (b) @ (c) # (d) .
15. 15.True or false: .note is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #hero (b) li (c) #star (d) .end
17. 17.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="big"> (c) <span id="intro"> (d) <span class="top">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) .note (b) #menu (c) #logo (d) h1
19. 19.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #big (b) #hero (c) .hero (d) h2
21. 21.🎯 Which element does the selector #top style? (a) <h2 class="star"> (b) <h1 id="intro"> (c) <h1 class="top"> (d) <h1 id="top">
22. 22.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <h1 class="note"> (c) <p class="main"> (d) <p id="main">
24. 24.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <div class="menu"> (c) <h1 id="logo"> (d) <span>
25. 25.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #top (b) .top (c) #intro (d) #red
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .big (b) #note (c) #intro (d) .intro
27. 27.True or false: #hero is an element selector. (a) False (b) True
28. 28.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
29. 29.True or false: #hero is an id selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #main (b) #red (c) .intro (d) div
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) #red (c) #top (d) .top
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) #main (c) #logo (d) .red
33. 33.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <h1 class="big"> (d) <div id="top">
34. 34.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <p class="top"> (c) <h1 class="star"> (d) <p id="top">
35. 35.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <span class="note"> (c) <div class="menu"> (d) <div class="star">
36. 36.True or false: #end is an id selector. (a) False (b) True
37. 37.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .intro (b) span (c) .menu (d) #main
39. 39.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .red (b) .top (c) #intro (d) #red

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