CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 144 · 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 element selector (b) an id selector (c) a class selector
2. 2.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
3. 3.🎯 Can many elements share the same class? (a) Yes (b) No
4. 4.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which element does the selector li style? (a) <li class="box"> (b) <div> (c) <span class="box"> (d) <p id="main">
6. 6.True or false: #hero is an id selector. (a) False (b) True
7. 7.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
8. 8.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h2 class="red"> (c) <h1 id="logo"> (d) <h1 class="logo">
9. 9.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
10. 10.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) #red (b) .hero (c) div (d) li
11. 11.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 Which element does the selector .note style? (a) <li class="red"> (b) <h2 class="note"> (c) <h2 class="big"> (d) <h2 id="note">
14. 14.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="big"> (c) <h1 class="red"> (d) <p class="note">
15. 15.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 id="note"> (c) <h1 class="note"> (d) <h1 class="big">
16. 16.🎯 Which element does the selector div style? (a) <div class="star"> (b) <span> (c) <h1 id="top"> (d) <p class="star">
17. 17.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span class="star"> (c) <span id="star"> (d) <span class="menu">
18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) div (b) span (c) #box (d) .star
19. 19.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) li (b) h2 (c) .logo (d) #red
20. 20.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) p (b) #note (c) h1 (d) .big
21. 21.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <div class="end"> (d) <span class="box">
22. 22.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) li (c) #note (d) #hero
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) .note (b) #end (c) #menu (d) h1
24. 24.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) #hero (b) #star (c) .end (d) span
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) .note (b) #menu (c) h2 (d) #intro
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) #hero (b) .box (c) .red (d) .end
27. 27.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which element does the selector .star style? (a) <div class="star"> (b) <div class="menu"> (c) <span class="note"> (d) <div id="star">
29. 29.🎯 Which element does the selector .big style? (a) <div id="big"> (b) <div class="red"> (c) <div class="big"> (d) <span class="box">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) h2 (b) #note (c) .note (d) .big
31. 31.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .box (b) span (c) .logo (d) p
32. 32.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) h1 (b) .note (c) .main (d) #note
33. 33.True or false: h1 is a class selector. (a) True (b) False
34. 34.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <span class="note"> (c) <div id="logo"> (d) <div class="logo">
35. 35.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) #star (b) .main (c) .menu (d) p
36. 36.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="note"> (c) <p id="top"> (d) <p id="hero">
37. 37.True or false: #top is an element selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #hero (b) #end (c) #note (d) .end
39. 39.True or false: img is a class selector. (a) False (b) True
40. 40.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h2 class="box"> (c) <li id="logo"> (d) <h1>

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