CSS Worksheet: Selectors Class and Id

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

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