CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 704 · 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 .big? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <p class="big"> (d) <h2 class="big">
3. 3.True or false: .card is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="note" id="main">Hello</h1> (a) .big (b) h1 (c) h2 (d) #logo
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.True or false: #logo is a class selector. (a) False (b) True
7. 7.🎯 Which CSS selector matches this element?
   <span class="big" id="main">Hello</span> (a) #big (b) span (c) #logo (d) .red
8. 8.🎯 Which element does the selector p style? (a) <h1> (b) <p class="note"> (c) <h2 class="note"> (d) <li id="hero">
9. 9.🎯 Which element does the selector #logo style? (a) <div id="logo"> (b) <div class="logo"> (c) <div id="end"> (d) <span class="note">
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="big" id="intro">Hello</h2> (a) h2 (b) li (c) .red (d) #main
11. 11.True or false: li is an element selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) #main (b) h1 (c) .intro (d) .note
13. 13.True or false: p is an id selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #red (b) .hero (c) #top (d) #hero
15. 15.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) .menu (b) #star (c) span (d) #end
17. 17.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) .logo (b) #logo (c) #end (d) #big
18. 18.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) .end (b) #hero (c) div (d) #menu
19. 19.True or false: #end is a class selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) #intro (b) p (c) #red (d) .red
21. 21.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) span (b) .intro (c) #main (d) #box
22. 22.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .note (b) #menu (c) h2 (d) li
24. 24.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) li (b) div (c) .menu (d) .main
25. 25.🎯 Which element does the selector p style? (a) <li id="main"> (b) <h1> (c) <h2 class="box"> (d) <p class="box">
26. 26.True or false: .big is an element selector. (a) False (b) True
27. 27.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="note"> (c) <div class="red"> (d) <li class="big">
28. 28.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
29. 29.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) #main (b) span (c) .main (d) .box
31. 31.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) span (b) #note (c) .big (d) #main
32. 32.True or false: img is an element selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) .end (b) #hero (c) .note (d) .menu
34. 34.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
35. 35.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
36. 36.True or false: #end is an element selector. (a) True (b) False
37. 37.True or false: #top is a class selector. (a) True (b) False
38. 38.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
39. 39.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) #top (b) li (c) div (d) .menu
40. 40.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector

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