CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 760 · 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.🎯 Which CSS selector matches this element?
   <li class="red" id="hero">Hello</li> (a) #red (b) .hero (c) .box (d) li
2. 2.🎯 Which CSS selector matches this element?
   <li class="big" id="main">Hello</li> (a) #logo (b) .big (c) .main (d) #big
3. 3.True or false: #hero is an id selector. (a) True (b) False
4. 4.True or false: .card is an element selector. (a) True (b) False
5. 5.True or false: .big is an id selector. (a) False (b) True
6. 6.True or false: #main is an id selector. (a) True (b) False
7. 7.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) h1 (b) .box (c) .red (d) #hero
9. 9.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
10. 10.🎯 Which element does the selector li style? (a) <div> (b) <li class="note"> (c) <p id="top"> (d) <span class="note">
11. 11.🎯 Which element does the selector .star style? (a) <li class="note"> (b) <h2 class="menu"> (c) <h2 class="star"> (d) <h2 id="star">
12. 12.🎯 Which element does the selector #top style? (a) <h2 id="intro"> (b) <h2 class="top"> (c) <h2 id="top"> (d) <li class="red">
13. 13.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .intro (b) #box (c) li (d) div
14. 14.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="hero"> (c) <li class="big"> (d) <h2>
15. 15.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
16. 16.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h2 class="box"> (d) <h1 id="hero">
17. 17.🎯 Which CSS selector matches this element?
    <div class="menu" id="top">Hello</div> (a) #menu (b) .menu (c) .top (d) .note
18. 18.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <span class="menu"> (c) <p> (d) <h1 class="menu">
19. 19.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
20. 20.True or false: #logo is an id selector. (a) False (b) True
21. 21.True or false: li is a class selector. (a) True (b) False
22. 22.True or false: img is a class selector. (a) False (b) True
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.True or false: .note is an id selector. (a) False (b) True
25. 25.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
26. 26.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
27. 27.True or false: .big is a class selector. (a) True (b) False
28. 28.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
29. 29.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <h1> (d) <li id="logo">
30. 30.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="main">
31. 31.🎯 Which element does the selector div style? (a) <div class="note"> (b) <h1 id="main"> (c) <span> (d) <p class="note">
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) h1 (c) h2 (d) #note
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .menu (b) div (c) span (d) .end
34. 34.🎯 What kind of selector is #hero? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #note (b) div (c) .main (d) span
36. 36.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h2 class="note"> (c) <h1 id="logo"> (d) <h1 id="end">
37. 37.True or false: .star is an id selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #big (b) #logo (c) .red (d) #end
39. 39.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <p class="box"> (c) <h1> (d) <li id="logo">
40. 40.True or false: body is an element selector. (a) False (b) True

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