CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 509 · 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.🎯 Which CSS selector matches this element?
   <h2 class="big" id="main">Hello</h2> (a) #main (b) li (c) #logo (d) .red
2. 2.True or false: #top is an id selector. (a) True (b) False
3. 3.True or false: p is an element selector. (a) False (b) True
4. 4.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="note"> (c) <p id="hero"> (d) <p id="top">
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="hero">Hello</h1> (a) h2 (b) #top (c) .hero (d) #hero
6. 6.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
7. 7.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
8. 8.True or false: #end is a class selector. (a) True (b) False
9. 9.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
10. 10.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <span class="note"> (c) <div id="star"> (d) <div class="menu">
11. 11.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
12. 12.True or false: .star is an element selector. (a) False (b) True
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) .box (b) span (c) #logo (d) #main
15. 15.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) p (c) #main (d) h1
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) .star (c) #intro (d) .intro
17. 17.🎯 Which element does the selector #end style? (a) <div class="end"> (b) <div id="hero"> (c) <span class="big"> (d) <div id="end">
18. 18.True or false: .note is a class selector. (a) False (b) True
19. 19.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #top (b) div (c) #note (d) span
21. 21.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .intro (b) #menu (c) .menu (d) .note
22. 22.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <h2 class="end"> (c) <h2 id="hero"> (d) <li class="note">
25. 25.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <p id="hero"> (c) <span class="menu"> (d) <div>
26. 26.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: .note is an id selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) li (b) #star (c) .top (d) div
29. 29.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .hero (b) #menu (c) .note (d) li
30. 30.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #hero (b) #box (c) .star (d) .box
31. 31.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h2 class="red"> (c) <h1 class="note"> (d) <h1 class="big">
32. 32.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
33. 33.True or false: li is an id selector. (a) True (b) False
34. 34.🎯 Can many elements share the same class? (a) No (b) Yes
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) li (b) #logo (c) #main (d) .main
36. 36.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) p (b) span (c) #end (d) .logo
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #big (b) .big (c) .top (d) #intro
38. 38.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
40. 40.True or false: .note is an element selector. (a) True (b) False

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