CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 349 · 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?
   <span class="red" id="end">Hello</span> (a) .end (b) .box (c) p (d) #end
2. 2.True or false: p is an element selector. (a) False (b) True
3. 3.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
4. 4.True or false: body is an element selector. (a) False (b) True
5. 5.True or false: .note is a class selector. (a) False (b) True
6. 6.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <span class="star" id="top">Hello</span> (a) .star (b) .menu (c) #star (d) .top
10. 10.True or false: p is a class selector. (a) False (b) True
11. 11.🎯 Which element does the selector #hero style? (a) <div class="big"> (b) <li id="hero"> (c) <li class="hero"> (d) <li id="top">
12. 12.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) .top (c) .red (d) .big
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) li (b) h2 (c) #box (d) .star
14. 14.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) span (b) #note (c) #intro (d) #main
16. 16.🎯 Which element does the selector .menu style? (a) <span class="big"> (b) <div class="menu"> (c) <div id="menu"> (d) <div class="note">
17. 17.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li id="menu"> (c) <li class="menu"> (d) <li class="note">
18. 18.True or false: .big is an element selector. (a) False (b) True
19. 19.🎯 Which element does the selector #intro style? (a) <p class="red"> (b) <span id="main"> (c) <span id="intro"> (d) <span class="intro">
20. 20.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) div (b) span (c) #big (d) .logo
21. 21.🎯 Which CSS selector matches this element?
    <span class="star" id="end">Hello</span> (a) .end (b) #star (c) #end (d) #hero
22. 22.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
23. 23.True or false: .card is an element selector. (a) False (b) True
24. 24.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h2 (b) .logo (c) #logo (d) #end
27. 27.True or false: img is an element selector. (a) False (b) True
28. 28.True or false: .menu is an id selector. (a) True (b) False
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #note (b) li (c) #intro (d) .top
30. 30.🎯 Which element does the selector #main style? (a) <p id="logo"> (b) <p class="main"> (c) <h1 class="menu"> (d) <p id="main">
31. 31.🎯 Can many elements share the same class? (a) Yes (b) No
32. 32.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="note"> (c) <h1 class="note"> (d) <p>
33. 33.🎯 Which sign starts an id selector? (a) @ (b) & (c) # (d) .
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) .box (b) #red (c) .red (d) .main
35. 35.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <h1 class="menu"> (c) <p id="box"> (d) <p class="star">
36. 36.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <span class="star"> (c) <div> (d) <li class="star">
37. 37.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) #hero (b) li (c) .menu (d) .end
38. 38.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
39. 39.True or false: .star is an id selector. (a) False (b) True
40. 40.🎯 Which element does the selector #end style? (a) <li class="red"> (b) <h2 class="end"> (c) <h2 id="hero"> (d) <h2 id="end">

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