CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 845 · 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 sign starts an id selector? (a) . (b) # (c) & (d) @
2. 2.🎯 Which element does the selector #intro style? (a) <h1 class="star"> (b) <p class="intro"> (c) <p id="intro"> (d) <p id="main">
3. 3.🎯 Which element does the selector li style? (a) <p id="logo"> (b) <li class="star"> (c) <span class="star"> (d) <div>
4. 4.True or false: #top is an id selector. (a) False (b) True
5. 5.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
6. 6.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <li class="box"> (c) <h2 id="logo"> (d) <h2 id="end">
7. 7.🎯 Which CSS selector matches this element?
   <li class="big" id="top">Hello</li> (a) div (b) #big (c) li (d) .red
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) #top (b) .hero (c) #hero (d) .menu
11. 11.True or false: .card is a class selector. (a) False (b) True
12. 12.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
13. 13.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h1 class="star"> (c) <h2 class="note"> (d) <h1 id="star">
14. 14.True or false: #hero is an id selector. (a) True (b) False
15. 15.True or false: .big is a class selector. (a) False (b) True
16. 16.🎯 Which element does the selector .box style? (a) <span id="box"> (b) <p class="menu"> (c) <span class="box"> (d) <span class="star">
17. 17.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) .main (b) div (c) li (d) .note
18. 18.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .end (b) .box (c) #box (d) .star
20. 20.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <p class="box"> (c) <h1 class="star"> (d) <p id="red">
21. 21.🎯 Which element does the selector h2 style? (a) <div class="box"> (b) <span id="intro"> (c) <li> (d) <h2 class="box">
22. 22.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .note (b) h2 (c) h1 (d) .intro
24. 24.True or false: #top is an element selector. (a) True (b) False
25. 25.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector .box style? (a) <h1 class="menu"> (b) <p id="box"> (c) <p class="box"> (d) <p class="star">
28. 28.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #main (b) p (c) span (d) #box
29. 29.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
30. 30.True or false: .menu is an element selector. (a) False (b) True
31. 31.True or false: h1 is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .big (b) .red (c) .intro (d) span
33. 33.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <span id="logo"> (c) <div class="star"> (d) <li>
35. 35.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) #main (b) #intro (c) span (d) #note
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) span (b) .big (c) #end (d) #note
37. 37.True or false: #end is an id selector. (a) False (b) True
38. 38.🎯 Which element does the selector p style? (a) <h2 class="big"> (b) <h1> (c) <p class="big"> (d) <li id="hero">
39. 39.True or false: .big is an element selector. (a) True (b) False
40. 40.True or false: .note is an id selector. (a) False (b) True

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