CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 275 · 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: .menu is an element selector. (a) True (b) False
2. 2.True or false: img is an id selector. (a) False (b) True
3. 3.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
4. 4.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
5. 5.True or false: #logo is an id selector. (a) False (b) True
6. 6.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h1 class="big"> (c) <p> (d) <h2 id="logo">
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
9. 9.🎯 Which CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) h1 (b) #main (c) .star (d) .intro
10. 10.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <p class="menu"> (c) <span class="star"> (d) <span class="box">
11. 11.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
12. 12.True or false: #top is an id selector. (a) False (b) True
13. 13.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h2 (b) #intro (c) #main (d) #note
16. 16.True or false: body is an id selector. (a) False (b) True
17. 17.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .box (b) .red (c) .main (d) #red
18. 18.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div class="top"> (c) <span class="menu"> (d) <div id="intro">
19. 19.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <li class="star"> (d) <h2 id="intro">
21. 21.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 id="intro"> (c) <h2 class="top"> (d) <li class="note">
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #logo (b) h1 (c) .main (d) #big
23. 23.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
24. 24.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <li class="red"> (c) <div class="box"> (d) <li id="big">
25. 25.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #star (b) span (c) .top (d) .star
26. 26.🎯 Which element does the selector .menu style? (a) <div id="menu"> (b) <span class="big"> (c) <div class="note"> (d) <div class="menu">
27. 27.🎯 Which element does the selector span style? (a) <span class="red"> (b) <p> (c) <h1 class="red"> (d) <h2 id="top">
28. 28.🎯 Can many elements share the same class? (a) No (b) Yes
29. 29.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) #star (b) #top (c) p (d) h1
30. 30.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li id="menu"> (c) <li class="note"> (d) <div class="big">
31. 31.True or false: .big is an id selector. (a) False (b) True
32. 32.True or false: .big is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .big (b) .red (c) #main (d) #big
34. 34.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) div (b) li (c) .end (d) #note
35. 35.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <h1 class="red"> (c) <p id="intro"> (d) <p id="top">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) li (b) .box (c) h2 (d) .end
37. 37.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #logo (b) div (c) #box (d) .main
38. 38.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .star (b) .intro (c) span (d) #intro
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) .menu (b) h2 (c) .hero (d) .star
40. 40.True or false: p is a class selector. (a) False (b) True

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