CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 421 · 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 element does the selector li style? (a) <p id="main"> (b) <span class="menu"> (c) <div> (d) <li class="menu">
2. 2.True or false: #main is a class selector. (a) True (b) False
3. 3.True or false: .menu is a class selector. (a) False (b) True
4. 4.True or false: #hero is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector .big style? (a) <div class="big"> (b) <div id="big"> (c) <div class="red"> (d) <span class="box">
6. 6.True or false: p is a class selector. (a) False (b) True
7. 7.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 Which CSS selector matches this element?
   <li class="star" id="end">Hello</li> (a) #hero (b) div (c) .end (d) #end
10. 10.True or false: .star is an id selector. (a) True (b) False
11. 11.True or false: .big is an id selector. (a) True (b) False
12. 12.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <p class="menu"> (d) <h1 id="intro">
13. 13.True or false: body is an element selector. (a) True (b) False
14. 14.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
15. 15.True or false: .star is an element selector. (a) True (b) False
16. 16.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .hero (b) h1 (c) #note (d) p
18. 18.🎯 Which element does the selector p style? (a) <li id="logo"> (b) <h2 class="menu"> (c) <h1> (d) <p class="menu">
19. 19.True or false: .card is a class selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .intro (b) p (c) span (d) .menu
21. 21.🎯 Which element does the selector span style? (a) <p> (b) <span class="note"> (c) <h1 class="note"> (d) <h2 id="main">
22. 22.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) p (c) #main (d) #note
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) .box (b) #end (c) .end (d) #red
26. 26.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <li class="menu"> (c) <h2 id="intro"> (d) <h2 id="main">
27. 27.True or false: #main is an element selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #main (b) h1 (c) #note (d) .big
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #top (b) .note (c) .hero (d) #hero
30. 30.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
31. 31.True or false: p is an element selector. (a) False (b) True
32. 32.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
33. 33.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) #box (b) #intro (c) div (d) span
34. 34.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <h2 class="red"> (c) <div class="red"> (d) <li>
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) .top (b) #red (c) .box (d) h1
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .red (b) h2 (c) #main (d) .big
38. 38.True or false: #hero is an id selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) h2 (b) #end (c) #menu (d) .note
40. 40.🎯 Which element does the selector .menu style? (a) <h2 class="note"> (b) <h2 class="menu"> (c) <li class="big"> (d) <h2 id="menu">

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