CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 241 · 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) <div> (b) <li class="big"> (c) <p id="top"> (d) <span class="big">
2. 2.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
3. 3.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 Which element does the selector div style? (a) <span> (b) <div class="note"> (c) <p class="note"> (d) <h1 id="hero">
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
7. 7.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <li id="hero"> (d) <p class="box">
9. 9.🎯 Which element does the selector .note style? (a) <div id="note"> (b) <div class="note"> (c) <span class="red"> (d) <div class="big">
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) #star (b) .menu (c) .end (d) .star
11. 11.True or false: #top is an element selector. (a) False (b) True
12. 12.True or false: h1 is a class selector. (a) True (b) False
13. 13.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
14. 14.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .menu (b) #star (c) span (d) .star
15. 15.🎯 Which element does the selector #intro style? (a) <p class="intro"> (b) <h1 class="box"> (c) <p id="main"> (d) <p id="intro">
16. 16.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 id="big"> (c) <h2 class="big"> (d) <h2 class="red">
18. 18.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
19. 19.True or false: h1 is an element selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) div (b) .end (c) #hero (d) #note
21. 21.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <h1> (c) <li id="top"> (d) <p class="menu">
22. 22.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .note (b) #menu (c) #main (d) p
23. 23.🎯 Which element does the selector #end style? (a) <span class="end"> (b) <span id="end"> (c) <span id="hero"> (d) <p class="star">
24. 24.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .star (b) #star (c) span (d) #hero
25. 25.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
26. 26.True or false: #end is an element selector. (a) False (b) True
27. 27.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
28. 28.True or false: .note is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) h1 (b) h2 (c) .end (d) #hero
30. 30.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <div id="main"> (c) <h1 class="star"> (d) <h2>
31. 31.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .red (b) .hero (c) span (d) #big
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) #red (b) .logo (c) h2 (d) .red
34. 34.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="note"> (c) <div class="red"> (d) <li class="big">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .top (b) #note (c) h2 (d) h1
36. 36.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .hero (b) #menu (c) #top (d) #hero
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #logo (b) .main (c) .box (d) #box
38. 38.True or false: .star is an element selector. (a) False (b) True
39. 39.🎯 Which element does the selector .red style? (a) <h1 class="box"> (b) <h1 id="red"> (c) <h1 class="red"> (d) <h2 class="star">
40. 40.True or false: #end is a class selector. (a) True (b) False

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