CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 641 · 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 .star style? (a) <h1 class="note"> (b) <p id="star"> (c) <p class="star"> (d) <p class="menu">
2. 2.🎯 Which element does the selector p style? (a) <h1> (b) <p class="red"> (c) <h2 class="red"> (d) <li id="intro">
3. 3.True or false: #main is a class selector. (a) False (b) True
4. 4.True or false: .star is a class selector. (a) True (b) False
5. 5.🎯 Which sign starts an id selector? (a) # (b) @ (c) & (d) .
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) #end (b) .box (c) .logo (d) .red
7. 7.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) #note (b) span (c) div (d) .intro
8. 8.🎯 Which element does the selector #intro style? (a) <li class="big"> (b) <h2 id="intro"> (c) <h2 class="intro"> (d) <h2 id="main">
9. 9.🎯 Which CSS selector matches this element?
   <p class="red" id="hero">Hello</p> (a) #red (b) #hero (c) .hero (d) h1
10. 10.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <li> (c) <span id="intro"> (d) <h2 class="note">
11. 11.True or false: .card is a class selector. (a) False (b) True
12. 12.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) .box (b) .intro (c) #red (d) #intro
14. 14.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #end (b) p (c) #logo (d) .red
16. 16.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .note (b) .big (c) .hero (d) #note
18. 18.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .intro (b) #star (c) p (d) .star
19. 19.🎯 Can many elements share the same class? (a) Yes (b) No
20. 20.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
21. 21.🎯 Which element does the selector #top style? (a) <li class="red"> (b) <h2 id="intro"> (c) <h2 id="top"> (d) <h2 class="top">
22. 22.True or false: #end is a class selector. (a) True (b) False
23. 23.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
24. 24.True or false: #end is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .star (b) #star (c) .intro (d) .menu
26. 26.True or false: body is a class selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <div class="menu" id="hero">Hello</div> (a) #menu (b) span (c) .hero (d) div
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) .logo (b) #end (c) h2 (d) #menu
29. 29.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) .box (b) #hero (c) .red (d) span
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #hero (b) #end (c) h2 (d) #red
31. 31.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #end (b) p (c) #note (d) .big
32. 32.True or false: h1 is an element selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .intro (b) #intro (c) .menu (d) span
34. 34.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <div class="big"> (c) <li id="menu"> (d) <li class="menu">
35. 35.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #logo (b) #box (c) .logo (d) h1
36. 36.True or false: .menu is an id selector. (a) True (b) False
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) #main (c) #logo (d) .main
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) #box (b) h2 (c) #hero (d) .star
39. 39.True or false: #main is an id selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .intro (b) .box (c) #intro (d) #main

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