CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 761 · 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.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
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.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="big">
5. 5.🎯 Which element does the selector .star style? (a) <div class="note"> (b) <li id="star"> (c) <li class="menu"> (d) <li class="star">
6. 6.True or false: img is a class selector. (a) False (b) True
7. 7.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which CSS selector matches this element?
   <div class="box" id="main">Hello</div> (a) .star (b) div (c) #logo (d) span
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) .end (b) #star (c) li (d) .star
10. 10.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
11. 11.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #red (b) .box (c) #logo (d) #end
13. 13.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .red (b) .big (c) .top (d) #intro
14. 14.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <span id="logo"> (d) <h2 class="big">
16. 16.True or false: #end is a class selector. (a) True (b) False
17. 17.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Can many elements share the same class? (a) Yes (b) No
20. 20.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) div (b) #top (c) .top (d) #box
21. 21.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
22. 22.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
23. 23.🎯 Which element does the selector span style? (a) <h1 class="big"> (b) <h2 id="main"> (c) <span class="big"> (d) <p>
24. 24.True or false: p is an element selector. (a) False (b) True
25. 25.🎯 Which element does the selector #intro style? (a) <li class="red"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <h2 id="main">
26. 26.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <div class="big"> (c) <li id="menu"> (d) <li class="menu">
27. 27.True or false: li is a class selector. (a) True (b) False
28. 28.True or false: body is an id selector. (a) True (b) False
29. 29.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <p class="big"> (c) <div class="big"> (d) <span>
31. 31.🎯 Which element does the selector h1 style? (a) <h1 class="menu"> (b) <li class="menu"> (c) <h2> (d) <div id="logo">
32. 32.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="note">
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) #box (b) h2 (c) #top (d) .hero
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) #menu (b) .note (c) .menu (d) li
35. 35.🎯 Which CSS selector matches this element?
    <li class="big" id="intro">Hello</li> (a) #main (b) .big (c) .intro (d) .red
36. 36.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p id="star"> (c) <h1 class="note"> (d) <p class="star">
37. 37.🎯 Which element does the selector .box style? (a) <h2 id="box"> (b) <li class="menu"> (c) <h2 class="box"> (d) <h2 class="star">
38. 38.True or false: .note is an id selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #logo (b) .logo (c) .big (d) #note
40. 40.True or false: #top is an element selector. (a) False (b) True

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