CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 673 · 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.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="box" id="end">Hello</h2> (a) .end (b) .box (c) #box (d) #hero
4. 4.True or false: #logo is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector .menu style? (a) <h2 id="menu"> (b) <h2 class="note"> (c) <li class="big"> (d) <h2 class="menu">
6. 6.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
7. 7.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <p id="top"> (c) <span class="menu"> (d) <div>
8. 8.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
11. 11.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
12. 12.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) .menu (b) span (c) #intro (d) .intro
13. 13.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
14. 14.🎯 Can many elements share the same class? (a) Yes (b) No
15. 15.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) #logo (b) .logo (c) #end (d) #box
16. 16.True or false: #hero is a class selector. (a) True (b) False
17. 17.🎯 Which element does the selector #main style? (a) <h1 class="box"> (b) <p id="logo"> (c) <p class="main"> (d) <p id="main">
18. 18.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) #red (b) .hero (c) span (d) div
19. 19.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) .red (b) #intro (c) div (d) li
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) #big (c) .end (d) h2
21. 21.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
22. 22.True or false: .note is a class selector. (a) True (b) False
23. 23.True or false: .star is an element selector. (a) True (b) False
24. 24.True or false: #logo is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <li> (c) <h2 class="menu"> (d) <div class="menu">
26. 26.True or false: .star is an id selector. (a) True (b) False
27. 27.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <h1 class="note"> (c) <p class="menu"> (d) <p id="star">
28. 28.True or false: #hero is an element selector. (a) True (b) False
29. 29.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="big"> (c) <span id="hero"> (d) <h2 class="big">
30. 30.True or false: img is a class selector. (a) False (b) True
31. 31.True or false: .card is an id selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="end">Hello</h1> (a) #menu (b) .note (c) #end (d) #hero
33. 33.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #intro (b) #top (c) p (d) .star
34. 34.True or false: .note is an element selector. (a) True (b) False
35. 35.True or false: .star is a class selector. (a) False (b) True
36. 36.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
37. 37.True or false: h1 is an id selector. (a) False (b) True
38. 38.🎯 Which element does the selector div style? (a) <div class="big"> (b) <p class="big"> (c) <h1 id="hero"> (d) <span>
39. 39.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <div id="big"> (c) <span class="box"> (d) <div class="big">
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .red (b) h2 (c) #intro (d) #big

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