CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 455 · 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) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <div class="big" id="end">Hello</div> (a) div (b) span (c) .red (d) .end
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="red" id="end">Hello</h1> (a) #hero (b) h2 (c) .red (d) .end
4. 4.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 id="menu"> (c) <h2 class="note"> (d) <h2 class="menu">
6. 6.🎯 Which element does the selector li style? (a) <p id="end"> (b) <div> (c) <li class="note"> (d) <span class="note">
7. 7.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
8. 8.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
9. 9.True or false: .menu is a class selector. (a) True (b) False
10. 10.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
11. 11.True or false: h1 is a class selector. (a) False (b) True
12. 12.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <div class="note"> (c) <li id="hero"> (d) <li class="end">
13. 13.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which element does the selector #main style? (a) <p class="main"> (b) <p id="main"> (c) <h1 class="note"> (d) <p id="logo">
17. 17.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) .hero (b) h1 (c) p (d) #top
19. 19.True or false: .star is an element selector. (a) False (b) True
20. 20.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h2 class="big"> (c) <h1 class="top"> (d) <h1 id="top">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #red (b) .red (c) #intro (d) h2
22. 22.True or false: li is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) h2 (b) .star (c) .box (d) #box
24. 24.True or false: h1 is an element selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .big (b) #note (c) .top (d) .note
26. 26.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) span (b) #logo (c) .star (d) .logo
27. 27.🎯 Which element does the selector #main style? (a) <p class="menu"> (b) <span id="logo"> (c) <span id="main"> (d) <span class="main">
28. 28.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p id="red"> (c) <p class="red"> (d) <p class="box">
29. 29.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <h2 id="box">
31. 31.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="big"> (c) <h2 class="note"> (d) <li class="red">
32. 32.🎯 Which element does the selector p style? (a) <p class="red"> (b) <h2 class="red"> (c) <h1> (d) <li id="top">
33. 33.🎯 Which element does the selector .menu style? (a) <span id="menu"> (b) <p class="big"> (c) <span class="menu"> (d) <span class="note">
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .logo (b) h1 (c) #end (d) #big
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #end (b) .logo (c) h2 (d) li
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .big (b) .intro (c) #main (d) h1
37. 37.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) div (b) .hero (c) #box (d) .box
38. 38.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .red (b) div (c) #logo (d) #red
39. 39.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div class="big"> (c) <span class="box"> (d) <div id="big">
40. 40.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p class="box"> (c) <h1 class="menu"> (d) <p id="box">

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