CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 425 · 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 .note? (a) an id selector (b) a class selector (c) an element selector
2. 2.True or false: #hero is a class selector. (a) True (b) False
3. 3.🎯 Which element does the selector div style? (a) <span> (b) <p class="star"> (c) <h1 id="intro"> (d) <div class="star">
4. 4.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
5. 5.True or false: #main is an element selector. (a) False (b) True
6. 6.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
7. 7.🎯 Which element does the selector .big style? (a) <h2 class="box"> (b) <h1 id="big"> (c) <h1 class="big"> (d) <h1 class="red">
8. 8.🎯 Which element does the selector h2 style? (a) <span id="intro"> (b) <div class="note"> (c) <h2 class="note"> (d) <li>
9. 9.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) #note (b) .note (c) #top (d) .hero
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) .main (c) h2 (d) #star
12. 12.🎯 Which element does the selector #logo style? (a) <h2 class="big"> (b) <h1 id="end"> (c) <h1 class="logo"> (d) <h1 id="logo">
13. 13.True or false: li is a class selector. (a) False (b) True
14. 14.True or false: #hero is an id selector. (a) False (b) True
15. 15.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="logo"> (c) <p id="main"> (d) <h1 class="box">
16. 16.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
17. 17.True or false: #logo is a class selector. (a) False (b) True
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #red (b) .box (c) .red (d) .top
19. 19.True or false: .note is an id selector. (a) True (b) False
20. 20.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="top"> (d) <h1 class="big">
21. 21.🎯 Which element does the selector .box style? (a) <li class="star"> (b) <li class="box"> (c) <div class="menu"> (d) <li id="box">
22. 22.True or false: p is an id selector. (a) False (b) True
23. 23.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
24. 24.True or false: #logo is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) p (b) #red (c) h1 (d) #top
26. 26.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) .star (b) #hero (c) span (d) p
27. 27.True or false: body is an element selector. (a) True (b) False
28. 28.True or false: #end is an element selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .star (b) li (c) .intro (d) #main
30. 30.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h2> (c) <div id="end"> (d) <h1 class="note">
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) .star (b) h2 (c) #main (d) #intro
32. 32.True or false: .star is a class selector. (a) False (b) True
33. 33.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <p class="box"> (c) <span id="top"> (d) <span id="hero">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) .hero (b) h2 (c) #top (d) h1
35. 35.🎯 Can many elements share the same class? (a) Yes (b) No
36. 36.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="top"> (c) <h2 id="hero"> (d) <li class="star">
37. 37.True or false: .menu is an element selector. (a) False (b) True
38. 38.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li id="star"> (c) <div class="note"> (d) <li class="star">
39. 39.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #note (b) #logo (c) .big (d) .logo
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .intro (b) #note (c) span (d) div

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