CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 810 · 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.True or false: .card is an id selector. (a) True (b) False
2. 2.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
3. 3.True or false: .menu is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) #big (b) .big (c) .top (d) .red
5. 5.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
6. 6.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
7. 7.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
8. 8.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Can many elements share the same class? (a) No (b) Yes
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #logo (b) .logo (c) #box (d) h1
11. 11.🎯 Which element does the selector div style? (a) <p class="big"> (b) <span> (c) <div class="big"> (d) <h1 id="hero">
12. 12.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .big (b) #big (c) .red (d) #intro
13. 13.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 Which element does the selector li style? (a) <div> (b) <li class="big"> (c) <span class="big"> (d) <p id="end">
15. 15.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) li (b) #note (c) .intro (d) div
17. 17.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
18. 18.🎯 Which element does the selector li style? (a) <p id="top"> (b) <div> (c) <li class="star"> (d) <span class="star">
19. 19.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) p (b) #intro (c) #main (d) .intro
20. 20.🎯 Which element does the selector .note style? (a) <div class="red"> (b) <li class="note"> (c) <li class="big"> (d) <li id="note">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .red (b) #big (c) #main (d) .main
22. 22.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 class="big"> (c) <h1 id="big"> (d) <h2 class="box">
24. 24.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) #logo (c) .main (d) #main
26. 26.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) #red (b) .box (c) .intro (d) #intro
28. 28.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) h1 (c) #hero (d) #top
29. 29.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <li class="red"> (c) <div id="intro"> (d) <h2>
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) #intro (b) li (c) #main (d) .intro
32. 32.True or false: .star is a class selector. (a) True (b) False
33. 33.🎯 Which element does the selector p style? (a) <p class="note"> (b) <li id="top"> (c) <h1> (d) <h2 class="note">
34. 34.True or false: .card is a class selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) li (b) .big (c) .hero (d) h2
36. 36.True or false: p is an element selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) p (b) #main (c) #big (d) span
38. 38.🎯 Which element does the selector .menu style? (a) <h2 class="menu"> (b) <h2 class="note"> (c) <h2 id="menu"> (d) <li class="big">
39. 39.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <li id="main"> (c) <div class="box"> (d) <li class="main">
40. 40.🎯 Which CSS selector matches this element?
    <span class="big" id="main">Hello</span> (a) .main (b) span (c) #logo (d) p

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