CSS Worksheet: Selectors Class and Id

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

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