CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 244 · 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 sign starts an id selector? (a) @ (b) # (c) . (d) &
2. 2.True or false: .star is an id selector. (a) True (b) False
3. 3.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <h1 class="red"> (d) <p class="note">
4. 4.🎯 Which CSS selector matches this element?
   <li class="note" id="top">Hello</li> (a) .big (b) #top (c) .top (d) div
5. 5.True or false: .star is a class selector. (a) False (b) True
6. 6.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <li> (c) <div class="red"> (d) <span id="main">
8. 8.🎯 Which CSS selector matches this element?
   <p class="big" id="main">Hello</p> (a) #logo (b) h1 (c) .main (d) p
9. 9.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="big"> (c) <li class="big"> (d) <h2>
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) #logo (b) .note (c) #main (d) #menu
11. 11.True or false: #top is an element selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .red (b) #red (c) .box (d) .main
13. 13.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="menu"> (c) <span class="top"> (d) <span id="intro">
14. 14.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) #menu (b) .intro (c) #intro (d) .note
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) #menu (b) span (c) div (d) .intro
16. 16.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <h1 class="red"> (c) <p class="end"> (d) <p id="hero">
17. 17.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .big (b) .end (c) div (d) #note
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) h2 (b) #logo (c) li (d) .red
19. 19.True or false: .big is an id selector. (a) True (b) False
20. 20.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.True or false: li is an element selector. (a) True (b) False
23. 23.True or false: p is an element selector. (a) False (b) True
24. 24.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) .hero (b) #hero (c) #note (d) li
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="star" id="top">Hello</h2> (a) .menu (b) .star (c) li (d) .top
28. 28.🎯 Which element does the selector div style? (a) <p class="box"> (b) <span> (c) <div class="box"> (d) <h1 id="hero">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) #big (b) li (c) #main (d) h2
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #logo (b) .big (c) h2 (d) #main
31. 31.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
32. 32.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) span (b) .logo (c) #logo (d) #red
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) #intro (b) .top (c) h2 (d) .big
34. 34.🎯 Which element does the selector .note style? (a) <span class="note"> (b) <span id="note"> (c) <span class="big"> (d) <p class="red">
35. 35.True or false: li is a class selector. (a) False (b) True
36. 36.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
37. 37.True or false: h1 is an element selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) span (b) #star (c) .main (d) p
39. 39.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
40. 40.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p id="star"> (c) <p class="star"> (d) <h1 class="note">

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