CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 613 · 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 id selector (b) a class selector (c) an element selector
2. 2.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.True or false: .note is an element selector. (a) False (b) True
5. 5.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h2 class="note">
6. 6.🎯 Which element does the selector li style? (a) <span class="red"> (b) <li class="red"> (c) <p id="logo"> (d) <div>
7. 7.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <li class="menu" id="intro">Hello</li> (a) .intro (b) .note (c) .menu (d) #menu
9. 9.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <p class="red"> (c) <span id="note"> (d) <span class="note">
10. 10.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="red"> (c) <div id="end"> (d) <h1 class="red">
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) h1 (b) #end (c) .logo (d) #star
13. 13.🎯 Which sign starts an id selector? (a) . (b) @ (c) & (d) #
14. 14.True or false: .card is a class selector. (a) False (b) True
15. 15.🎯 Which element does the selector .big style? (a) <span class="red"> (b) <span id="big"> (c) <span class="big"> (d) <p class="box">
16. 16.True or false: .note is an id selector. (a) True (b) False
17. 17.True or false: .menu is a class selector. (a) True (b) False
18. 18.True or false: p is an element selector. (a) False (b) True
19. 19.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .logo (b) .note (c) h2 (d) h1
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #logo (b) .note (c) div (d) #menu
23. 23.🎯 Which element does the selector p style? (a) <h2 class="menu"> (b) <p class="menu"> (c) <h1> (d) <li id="main">
24. 24.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="menu"> (c) <li class="star"> (d) <div class="note">
26. 26.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #end (b) .end (c) h1 (d) #red
27. 27.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #intro (b) #main (c) .intro (d) div
28. 28.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
29. 29.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <li class="red"> (c) <h2 id="top"> (d) <h2 id="hero">
30. 30.True or false: .note is a class selector. (a) True (b) False
31. 31.🎯 What kind of selector is p? (a) an element selector (b) an id selector (c) a class selector
32. 32.🎯 Which element does the selector li style? (a) <span class="box"> (b) <div> (c) <p id="hero"> (d) <li class="box">
33. 33.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) .note (b) #logo (c) #menu (d) #end
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #top (b) .menu (c) #hero (d) li
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h2 (b) #red (c) .logo (d) .red
37. 37.🎯 Which element does the selector p style? (a) <h2 class="note"> (b) <li id="hero"> (c) <h1> (d) <p class="note">
38. 38.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <li class="top"> (c) <li id="top"> (d) <div class="menu">
39. 39.True or false: #hero is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) div (b) .intro (c) #intro (d) #star

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