CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 961 · 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: body is an element selector. (a) True (b) False
2. 2.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
3. 3.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which CSS selector matches this element?
   <div class="star" id="top">Hello</div> (a) .top (b) .menu (c) #top (d) span
6. 6.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
7. 7.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="red" id="main">Hello</p> (a) #red (b) .box (c) .main (d) p
9. 9.🎯 Which element does the selector .big style? (a) <li class="box"> (b) <h2 class="red"> (c) <h2 id="big"> (d) <h2 class="big">
10. 10.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
11. 11.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .box (b) #main (c) .star (d) .intro
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .main (b) #box (c) .box (d) #logo
13. 13.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .star (b) #top (c) .hero (d) span
14. 14.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) .box (b) #box (c) .main (d) p
15. 15.True or false: img is an element selector. (a) False (b) True
16. 16.True or false: h1 is a class selector. (a) False (b) True
17. 17.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <span> (c) <p class="note"> (d) <div class="note">
18. 18.🎯 Which element does the selector #main style? (a) <h1 id="logo"> (b) <h1 class="main"> (c) <h1 id="main"> (d) <h2 class="big">
19. 19.True or false: .menu is a class selector. (a) True (b) False
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="red"> (c) <h2 id="top"> (d) <span class="red">
22. 22.True or false: .big is an id selector. (a) True (b) False
23. 23.True or false: .star is a class selector. (a) False (b) True
24. 24.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span id="main"> (c) <p class="menu"> (d) <span class="intro">
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #intro (b) #top (c) h2 (d) #note
26. 26.True or false: #end is an id selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) #intro (b) #star (c) #main (d) span
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) #star (b) #hero (c) h1 (d) p
29. 29.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <h1 class="star"> (c) <p class="main"> (d) <p id="logo">
30. 30.🎯 Which element does the selector #end style? (a) <span id="hero"> (b) <span class="end"> (c) <span id="end"> (d) <p class="red">
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) .red (b) h1 (c) .main (d) #red
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #hero (b) #menu (c) .end (d) .menu
33. 33.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
34. 34.True or false: .menu is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) .main (b) #logo (c) .star (d) .menu
36. 36.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) #hero (b) #big (c) .red (d) span
38. 38.🎯 Which CSS selector matches this element?
    <span class="red" id="hero">Hello</span> (a) .hero (b) span (c) p (d) #red
39. 39.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="intro"> (c) <span class="star"> (d) <h1 class="star">
40. 40.🎯 Which element does the selector .red style? (a) <div class="box"> (b) <div id="red"> (c) <span class="star"> (d) <div class="red">

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