CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 389 · 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?
   <div class="note" id="top">Hello</div> (a) #note (b) #top (c) #intro (d) span
2. 2.True or false: #hero is an element selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="big" id="main">Hello</h1> (a) #big (b) .red (c) #main (d) h2
4. 4.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="red" id="end">Hello</h1> (a) #hero (b) h2 (c) #end (d) #red
6. 6.True or false: #end is an element selector. (a) True (b) False
7. 7.🎯 Can many elements share the same class? (a) Yes (b) No
8. 8.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which element does the selector #intro style? (a) <li class="red"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <h2 id="main">
10. 10.🎯 Which element does the selector li style? (a) <li class="big"> (b) <div> (c) <p id="intro"> (d) <span class="big">
11. 11.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
12. 12.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="red"> (c) <div id="top"> (d) <li class="red">
13. 13.True or false: h1 is an id selector. (a) False (b) True
14. 14.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) #hero (c) span (d) .note
16. 16.True or false: .note is a class selector. (a) False (b) True
17. 17.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
18. 18.True or false: #logo is an id selector. (a) True (b) False
19. 19.True or false: .note is an element selector. (a) True (b) False
20. 20.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
21. 21.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) p (b) h1 (c) #big (d) .hero
23. 23.🎯 Which element does the selector #hero style? (a) <h1 class="box"> (b) <p id="top"> (c) <p id="hero"> (d) <p class="hero">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) .box (c) .star (d) .main
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) h2 (b) #main (c) #big (d) li
26. 26.True or false: .star is a class selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #logo (b) .main (c) div (d) #main
28. 28.🎯 Which element does the selector #logo style? (a) <span id="end"> (b) <span id="logo"> (c) <p class="note"> (d) <span class="logo">
29. 29.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
30. 30.True or false: .big is a class selector. (a) False (b) True
31. 31.True or false: #main is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #box (b) .box (c) h1 (d) .top
33. 33.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="big"> (c) <li class="note"> (d) <div class="red">
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="top"> (c) <p class="red"> (d) <div class="red">
35. 35.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <li id="intro"> (d) <h1>
36. 36.🎯 Which element does the selector #end style? (a) <h2 class="end"> (b) <li class="note"> (c) <h2 id="end"> (d) <h2 id="hero">
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: #top is an element selector. (a) True (b) False
39. 39.🎯 Which element does the selector #intro style? (a) <p class="star"> (b) <span id="intro"> (c) <span id="main"> (d) <span class="intro">
40. 40.🎯 Which element does the selector div style? (a) <div class="star"> (b) <p class="star"> (c) <h1 id="end"> (d) <span>

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