CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 365 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
2. 2.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
3. 3.True or false: h1 is an id selector. (a) False (b) True
4. 4.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <h1 class="note"> (c) <div id="end"> (d) <h2>
5. 5.True or false: .star is an id selector. (a) True (b) False
6. 6.True or false: .big is a class selector. (a) False (b) True
7. 7.True or false: li is a class selector. (a) False (b) True
8. 8.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
9. 9.True or false: .card is an id selector. (a) True (b) False
10. 10.True or false: #end is an id selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .note (c) .top (d) #intro
12. 12.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
13. 13.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <span class="big"> (c) <h1 class="big"> (d) <p>
14. 14.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #end (b) p (c) .logo (d) .box
15. 15.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
16. 16.True or false: .star is an element selector. (a) False (b) True
17. 17.True or false: p is a class selector. (a) True (b) False
18. 18.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 id="star"> (c) <h1 class="star"> (d) <h2 class="note">
19. 19.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h2 class="star"> (c) <h1 id="logo"> (d) <h1 id="end">
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .big (b) .note (c) #hero (d) .end
21. 21.True or false: .note is an id selector. (a) False (b) True
22. 22.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h2 class="note"> (c) <p class="note"> (d) <h1>
23. 23.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 class="menu"> (d) <h2 id="menu">
24. 24.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) #logo (b) .menu (c) .main (d) div
26. 26.True or false: #logo is an id selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #end (b) #hero (c) .star (d) p
28. 28.True or false: .star is a class selector. (a) False (b) True
29. 29.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
30. 30.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h1 class="box"> (c) <h2 id="hero"> (d) <p>
31. 31.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="end"> (c) <h1 class="red"> (d) <h2>
32. 32.🎯 Can many elements share the same class? (a) No (b) Yes
33. 33.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector #logo style? (a) <h2 id="logo"> (b) <li class="big"> (c) <h2 class="logo"> (d) <h2 id="end">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #menu (b) #intro (c) #top (d) li
36. 36.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="note"> (c) <span class="note"> (d) <h2 id="hero">
37. 37.🎯 Which element does the selector #logo style? (a) <h1 class="menu"> (b) <p class="logo"> (c) <p id="logo"> (d) <p id="end">
38. 38.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="star"> (c) <div id="top"> (d) <li class="star">
40. 40.True or false: img is an element selector. (a) False (b) True

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