CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 552 · 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="big" id="top">Hello</div> (a) #top (b) #intro (c) .red (d) span
2. 2.🎯 Which CSS selector matches this element?
   <p class="menu" id="intro">Hello</p> (a) .intro (b) #intro (c) #menu (d) h1
3. 3.True or false: #top is an element selector. (a) True (b) False
4. 4.🎯 Which CSS selector matches this element?
   <p class="menu" id="top">Hello</p> (a) #menu (b) p (c) .note (d) #intro
5. 5.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
6. 6.True or false: #hero is an id selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) #star (b) #intro (c) h1 (d) p
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="main">Hello</p> (a) #note (b) .note (c) .main (d) .big
9. 9.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
10. 10.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h1 id="hero"> (d) <h2 class="red">
12. 12.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
14. 14.True or false: .card is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) .red (b) .big (c) #big (d) h1
16. 16.True or false: img is a class selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) p (b) #red (c) #end (d) #hero
18. 18.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <span class="star"> (c) <div class="box"> (d) <div class="red">
19. 19.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .big (b) .intro (c) #big (d) span
20. 20.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #intro (b) h2 (c) #top (d) #red
22. 22.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
23. 23.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
24. 24.🎯 Which element does the selector div style? (a) <span> (b) <div class="big"> (c) <p class="big"> (d) <h1 id="main">
25. 25.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 1 (d) 5
26. 26.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .box (b) #red (c) span (d) p
27. 27.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
29. 29.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) div (b) li (c) #big (d) .red
30. 30.True or false: .big is an id selector. (a) False (b) True
31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
32. 32.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 id="end"> (c) <li class="note"> (d) <h2 class="end">
33. 33.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <h2 class="note"> (c) <li class="big"> (d) <h2 class="menu">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="note" id="hero">Hello</h2> (a) li (b) .hero (c) h2 (d) #note
35. 35.True or false: .star is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) #logo (b) .main (c) #main (d) h2
37. 37.True or false: img is an element selector. (a) False (b) True
38. 38.True or false: #hero is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span id="big"> (c) <span class="red"> (d) <p class="box">
40. 40.True or false: .star is an element selector. (a) False (b) True

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