CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 135 · 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 .star? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
4. 4.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <h1 class="big"> (d) <p id="top">
5. 5.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h2 class="big"> (c) <h1 id="logo"> (d) <h1 class="main">
6. 6.🎯 Can many elements share the same class? (a) Yes (b) No
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="end">Hello</span> (a) #note (b) p (c) .big (d) .note
8. 8.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
9. 9.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) div (b) #intro (c) span (d) #big
10. 10.True or false: .big is an id selector. (a) False (b) True
11. 11.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
13. 13.True or false: #hero is an id selector. (a) True (b) False
14. 14.🎯 Which element does the selector .star style? (a) <span class="star"> (b) <span id="star"> (c) <p class="note"> (d) <span class="menu">
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .menu (b) .note (c) h2 (d) #menu
17. 17.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="menu"> (c) <div id="main"> (d) <h1 class="menu">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .big (b) #big (c) h2 (d) .red
19. 19.🎯 Which element does the selector p style? (a) <h1> (b) <p class="red"> (c) <h2 class="red"> (d) <li id="logo">
20. 20.True or false: h1 is an element selector. (a) True (b) False
21. 21.True or false: .card is an id selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) li (b) .top (c) #menu (d) .note
23. 23.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <p> (c) <h1 class="red"> (d) <span class="red">
25. 25.True or false: #main is an id selector. (a) False (b) True
26. 26.🎯 Which element does the selector span style? (a) <span class="star"> (b) <h1 class="star"> (c) <h2 id="hero"> (d) <p>
27. 27.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #hero (b) div (c) .box (d) span
28. 28.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h1> (c) <h2 class="note"> (d) <p class="note">
29. 29.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="box"> (c) <li id="main"> (d) <p class="box">
30. 30.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) .box (b) h1 (c) .star (d) #hero
31. 31.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <p class="box"> (c) <h1 class="star"> (d) <p class="red">
32. 32.True or false: .big is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) h1 (b) .menu (c) #menu (d) .hero
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) #intro (b) #red (c) h2 (d) .intro
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="box" id="intro">Hello</h2> (a) .intro (b) #main (c) #box (d) .box
36. 36.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 id="top"> (c) <h1 class="top"> (d) <h2 class="red">
37. 37.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 id="top"> (c) <h1 class="hero"> (d) <h2 class="box">
38. 38.🎯 Which element does the selector span style? (a) <h1 class="menu"> (b) <h2 id="end"> (c) <p> (d) <span class="menu">
39. 39.True or false: .star is an id selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #box (b) h2 (c) #main (d) #logo

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