CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 474 · 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?
   <h1 class="big" id="end">Hello</h1> (a) #hero (b) #big (c) h1 (d) .red
2. 2.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="big"> (c) <p class="big"> (d) <li id="intro">
3. 3.True or false: #logo is an element selector. (a) False (b) True
4. 4.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
5. 5.True or false: .big is a class selector. (a) False (b) True
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) h2 (b) .intro (c) #intro (d) #star
7. 7.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
8. 8.True or false: li is an element selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="top">Hello</h2> (a) #menu (b) .top (c) h2 (d) #intro
10. 10.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <li class="red"> (c) <h2 id="note"> (d) <h2 class="note">
11. 11.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #intro (b) .big (c) .red (d) #big
12. 12.🎯 Which element does the selector #end style? (a) <div id="end"> (b) <div id="hero"> (c) <span class="big"> (d) <div class="end">
13. 13.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #hero (b) div (c) .hero (d) #big
14. 14.True or false: h1 is an element selector. (a) False (b) True
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
16. 16.🎯 Can many elements share the same class? (a) No (b) Yes
17. 17.True or false: .note is a class selector. (a) True (b) False
18. 18.🎯 Which element does the selector #hero style? (a) <div class="menu"> (b) <li id="top"> (c) <li id="hero"> (d) <li class="hero">
19. 19.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
20. 20.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
21. 21.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="end">
22. 22.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) h1 (b) #intro (c) #star (d) #top
23. 23.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h1 class="logo"> (c) <h2 class="menu"> (d) <h1 id="end">
24. 24.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #main (b) #note (c) .note (d) .big
25. 25.🎯 Which element does the selector #hero style? (a) <span class="big"> (b) <div id="top"> (c) <div class="hero"> (d) <div id="hero">
26. 26.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #red (b) .box (c) .red (d) #hero
28. 28.🎯 Which element does the selector .star style? (a) <h1 id="star"> (b) <h2 class="note"> (c) <h1 class="star"> (d) <h1 class="menu">
29. 29.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #logo (b) #end (c) div (d) .logo
31. 31.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <div class="menu"> (c) <div class="note"> (d) <span class="big">
32. 32.True or false: #top is an element selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) h1 (b) #top (c) .box (d) #hero
34. 34.True or false: body is an element selector. (a) True (b) False
35. 35.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .main (b) .menu (c) .note (d) span
36. 36.True or false: p is an id selector. (a) True (b) False
37. 37.True or false: .card is an element selector. (a) True (b) False
38. 38.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="top"> (d) <h2 class="big">
39. 39.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) span (b) #big (c) #intro (d) .red
40. 40.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div class="red"> (c) <div id="red"> (d) <span class="star">

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