CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 490 · 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="note" id="logo">Hello</span> (a) .big (b) #end (c) .logo (d) span
2. 2.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="hero">Hello</div> (a) span (b) #hero (c) .big (d) #top
6. 6.🎯 Which element does the selector #hero style? (a) <h1 id="hero"> (b) <h1 id="top"> (c) <h1 class="hero"> (d) <h2 class="menu">
7. 7.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) .big (b) h2 (c) #end (d) .red
10. 10.True or false: .big is a class selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) #red (b) .end (c) .box (d) .red
12. 12.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <h2> (c) <li class="red"> (d) <h1 class="red">
13. 13.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) #note (b) #top (c) .big (d) li
15. 15.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which element does the selector div style? (a) <p class="menu"> (b) <h1 id="logo"> (c) <span> (d) <div class="menu">
17. 17.🎯 Which element does the selector p style? (a) <li id="end"> (b) <p class="big"> (c) <h2 class="big"> (d) <h1>
18. 18.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
19. 19.🎯 What kind of selector is img? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
21. 21.True or false: #top is a class selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) .big (b) li (c) #main (d) #note
23. 23.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
24. 24.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) #logo (b) span (c) p (d) .box
25. 25.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <h1 class="big"> (c) <p class="menu"> (d) <p class="note">
26. 26.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) span (b) .hero (c) #box (d) #hero
27. 27.True or false: #end is an id selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) h1 (b) .logo (c) .red (d) #logo
29. 29.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
30. 30.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <h1 class="star"> (c) <p id="end"> (d) <p class="end">
31. 31.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) #big (b) span (c) .red (d) .logo
32. 32.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #logo (b) #red (c) .box (d) .red
33. 33.True or false: .menu is an element selector. (a) True (b) False
34. 34.🎯 Which CSS selector matches this element?
    <div class="red" id="logo">Hello</div> (a) span (b) #logo (c) #end (d) .logo
35. 35.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
36. 36.True or false: #logo is an id selector. (a) False (b) True
37. 37.True or false: .star is a class selector. (a) True (b) False
38. 38.True or false: #end is a class selector. (a) False (b) True
39. 39.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <h1 class="note"> (c) <p id="hero"> (d) <p id="top">
40. 40.🎯 Which element does the selector #logo style? (a) <h2 id="logo"> (b) <h2 class="logo"> (c) <li class="note"> (d) <h2 id="end">

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