CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 963 · 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 element does the selector #hero style? (a) <p id="hero"> (b) <p id="top"> (c) <p class="hero"> (d) <h1 class="star">
2. 2.🎯 Which element does the selector span style? (a) <span class="big"> (b) <h2 id="hero"> (c) <h1 class="big"> (d) <p>
3. 3.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
4. 4.True or false: .big is a class selector. (a) True (b) False
5. 5.🎯 Which sign starts an id selector? (a) # (b) & (c) . (d) @
6. 6.🎯 Which CSS selector matches this element?
   <div class="note" id="top">Hello</div> (a) span (b) .note (c) .big (d) #intro
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) .menu (b) h2 (c) #star (d) .end
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 Which CSS selector matches this element?
   <li class="big" id="logo">Hello</li> (a) div (b) #big (c) #end (d) .big
10. 10.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
11. 11.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) p (b) span (c) #red (d) #logo
13. 13.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <h1 class="big"> (c) <p id="logo"> (d) <p class="logo">
14. 14.True or false: .card is a class selector. (a) False (b) True
15. 15.True or false: h1 is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <p id="intro"> (c) <p class="top"> (d) <h1 class="box">
17. 17.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) #main (b) #box (c) h1 (d) #logo
18. 18.True or false: #main is an id selector. (a) False (b) True
19. 19.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
20. 20.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
21. 21.True or false: .menu is a class selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #intro (b) .box (c) .red (d) .top
23. 23.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) .big (b) #main (c) #intro (d) span
24. 24.🎯 Which element does the selector #end style? (a) <p class="note"> (b) <span id="hero"> (c) <span class="end"> (d) <span id="end">
25. 25.True or false: p is an id selector. (a) False (b) True
26. 26.True or false: .card is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) li (b) #red (c) .end (d) h2
28. 28.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) span (b) #box (c) #intro (d) #top
29. 29.True or false: #hero is a class selector. (a) True (b) False
30. 30.True or false: li is an element selector. (a) True (b) False
31. 31.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
33. 33.🎯 Which element does the selector div style? (a) <span> (b) <p class="red"> (c) <div class="red"> (d) <h1 id="intro">
34. 34.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) #logo (b) .red (c) h2 (d) li
35. 35.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
36. 36.True or false: .note is an element selector. (a) True (b) False
37. 37.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <h1 class="menu"> (c) <p class="star"> (d) <p id="box">
38. 38.🎯 Which element does the selector span style? (a) <span class="menu"> (b) <p> (c) <h2 id="end"> (d) <h1 class="menu">
39. 39.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
40. 40.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #main (b) #big (c) .intro (d) .big

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