CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 846 · 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 #hero style? (a) <p id="top"> (b) <p id="hero"> (c) <h1 class="big"> (d) <p class="hero">
2. 2.🎯 Which element does the selector div style? (a) <div class="big"> (b) <h1 id="logo"> (c) <span> (d) <p class="big">
3. 3.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.True or false: p is an element selector. (a) True (b) False
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
7. 7.🎯 Which CSS selector matches this element?
   <p class="note" id="logo">Hello</p> (a) p (b) #note (c) h1 (d) #end
8. 8.True or false: .card is a class selector. (a) True (b) False
9. 9.🎯 Which element does the selector #top style? (a) <p class="box"> (b) <span id="intro"> (c) <span class="top"> (d) <span id="top">
10. 10.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
11. 11.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) .note (b) #note (c) .big (d) .hero
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #main (b) .intro (c) .big (d) span
13. 13.True or false: #hero is an element selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #red (b) .red (c) .main (d) #logo
15. 15.True or false: #top is an element selector. (a) False (b) True
16. 16.True or false: .menu is an element selector. (a) False (b) True
17. 17.True or false: #hero is an id selector. (a) True (b) False
18. 18.True or false: .big is an element selector. (a) False (b) True
19. 19.True or false: #logo is an id selector. (a) False (b) True
20. 20.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) .big (b) h2 (c) li (d) #end
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) h2 (b) .star (c) .hero (d) #top
23. 23.🎯 Which element does the selector #intro style? (a) <li class="big"> (b) <h2 class="intro"> (c) <h2 id="main"> (d) <h2 id="intro">
24. 24.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) span (b) .logo (c) #note (d) div
25. 25.True or false: li is an id selector. (a) False (b) True
26. 26.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <p class="big"> (c) <span class="menu"> (d) <span class="note">
27. 27.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
28. 28.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <p class="note"> (c) <span> (d) <div class="note">
29. 29.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) #top (c) #intro (d) h2
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) .note (b) .end (c) div (d) #end
32. 32.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h1 id="big"> (c) <h1 class="big"> (d) <h2 class="box">
33. 33.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #logo (b) .note (c) #menu (d) .menu
34. 34.True or false: h1 is an element selector. (a) True (b) False
35. 35.🎯 Which element does the selector li style? (a) <p id="top"> (b) <li class="box"> (c) <div> (d) <span class="box">
36. 36.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
37. 37.True or false: .note is an id selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) div (b) #intro (c) .big (d) .intro
39. 39.True or false: .card is an id selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .red (b) h2 (c) #logo (d) .logo

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