CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 354 · 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: .note is a class selector. (a) False (b) True
2. 2.True or false: li is an element selector. (a) False (b) True
3. 3.🎯 Can many elements share the same class? (a) No (b) Yes
4. 4.True or false: #hero is an id selector. (a) False (b) True
5. 5.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="big"> (c) <h1 class="intro"> (d) <h1 id="intro">
6. 6.True or false: .big is an element selector. (a) False (b) True
7. 7.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <li id="intro"> (c) <div class="menu"> (d) <li class="top">
9. 9.🎯 Which element does the selector h1 style? (a) <div id="main"> (b) <li class="big"> (c) <h1 class="big"> (d) <h2>
10. 10.True or false: p is a class selector. (a) True (b) False
11. 11.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <h2 id="top"> (d) <span class="box">
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) h2 (b) .end (c) #box (d) .star
13. 13.True or false: #top is a class selector. (a) False (b) True
14. 14.🎯 Which element does the selector #logo style? (a) <h2 class="note"> (b) <h1 class="logo"> (c) <h1 id="logo"> (d) <h1 id="end">
15. 15.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) .big (b) h2 (c) .intro (d) #note
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #logo (b) h2 (c) #main (d) .main
18. 18.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <h2 id="star"> (c) <li class="note"> (d) <h2 class="star">
19. 19.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
20. 20.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
21. 21.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) .logo (b) .star (c) li (d) #box
22. 22.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) #big (b) .red (c) #intro (d) .big
23. 23.🎯 What kind of selector is #end? (a) an element selector (b) an id selector (c) a class selector
24. 24.True or false: #logo is an id selector. (a) False (b) True
25. 25.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) .box (b) h2 (c) #end (d) #red
27. 27.🎯 Which element does the selector .menu style? (a) <span class="menu"> (b) <p class="big"> (c) <span id="menu"> (d) <span class="note">
28. 28.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .big (b) #main (c) .intro (d) h1
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #logo (b) #note (c) .note (d) div
30. 30.True or false: #logo is an element selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) #logo (b) .logo (c) span (d) .star
32. 32.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) p (b) #hero (c) #star (d) span
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .hero (b) #big (c) .red (d) h1
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #note (b) li (c) .note (d) #logo
35. 35.True or false: #end is an element selector. (a) False (b) True
36. 36.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
38. 38.True or false: body is an id selector. (a) False (b) True
39. 39.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
40. 40.🎯 Which element does the selector .big style? (a) <h1 id="big"> (b) <h1 class="big"> (c) <h2 class="box"> (d) <h1 class="red">

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