CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 801 · 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: p is a class selector. (a) True (b) False
2. 2.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <li class="star"> (c) <span class="star"> (d) <div>
3. 3.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
4. 4.🎯 Which element does the selector .star style? (a) <li class="note"> (b) <h2 id="star"> (c) <h2 class="menu"> (d) <h2 class="star">
5. 5.True or false: .card is a class selector. (a) True (b) False
6. 6.True or false: .menu is an id selector. (a) True (b) False
7. 7.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <li class="big"> (c) <h2> (d) <div id="top">
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) .menu (b) #intro (c) .intro (d) h2
9. 9.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 class="star"> (c) <h2 class="note"> (d) <h1 id="star">
10. 10.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .note (b) .main (c) #logo (d) p
11. 11.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 id="red">
12. 12.🎯 Can many elements share the same class? (a) No (b) Yes
13. 13.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #main (b) .intro (c) #intro (d) h1
15. 15.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <li id="star"> (c) <li class="menu"> (d) <div class="note">
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h1 (b) h2 (c) #note (d) #hero
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .top (b) #note (c) h1 (d) #intro
18. 18.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) .note (b) p (c) .end (d) #end
19. 19.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
20. 20.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
21. 21.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <h2 id="top"> (c) <h2 id="intro"> (d) <li class="box">
22. 22.True or false: li is an element selector. (a) False (b) True
23. 23.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="end"> (c) <li class="red"> (d) <h1 class="red">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #logo (b) #red (c) h1 (d) h2
25. 25.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 class="red"> (c) <h1 class="big"> (d) <h1 id="big">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) h2 (b) #hero (c) .star (d) #box
27. 27.True or false: img is a class selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .note (b) .big (c) #intro (d) li
29. 29.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <div class="star"> (c) <li class="hero"> (d) <li id="hero">
30. 30.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
31. 31.🎯 Which element does the selector #intro style? (a) <h2 id="intro"> (b) <li class="menu"> (c) <h2 class="intro"> (d) <h2 id="main">
32. 32.True or false: #top is a class selector. (a) False (b) True
33. 33.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) p (b) #big (c) .red (d) h1
36. 36.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 id="end"> (c) <h2 class="logo"> (d) <h2 id="logo">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .menu (b) li (c) .star (d) .intro
38. 38.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) li (c) .hero (d) div
39. 39.True or false: body is an id selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="star" id="top">Hello</li> (a) .menu (b) #intro (c) li (d) .top

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