CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 248 · 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 .note? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) #top (b) #big (c) h1 (d) .hero
3. 3.🎯 Which CSS selector matches this element?
   <p class="note" id="intro">Hello</p> (a) .intro (b) #note (c) h1 (d) p
4. 4.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <h1 class="box"> (c) <span class="box"> (d) <p>
5. 5.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="big" id="intro">Hello</h2> (a) .intro (b) .red (c) .big (d) #big
7. 7.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
8. 8.True or false: p is an element selector. (a) False (b) True
9. 9.True or false: .note is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .big (b) #top (c) h1 (d) #intro
12. 12.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
13. 13.True or false: #logo is an id selector. (a) True (b) False
14. 14.True or false: #top is an id selector. (a) True (b) False
15. 15.🎯 Which element does the selector #intro style? (a) <h2 id="intro"> (b) <h2 class="intro"> (c) <h2 id="main"> (d) <li class="menu">
16. 16.True or false: body is an element selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) h2 (b) .intro (c) .big (d) .red
18. 18.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
20. 20.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) #red (b) #main (c) .red (d) div
21. 21.🎯 Which element does the selector .big style? (a) <li class="big"> (b) <div class="box"> (c) <li class="red"> (d) <li id="big">
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) .main (b) .big (c) h2 (d) li
23. 23.True or false: .card is an element selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) .big (b) .main (c) #logo (d) #main
25. 25.True or false: .card is a class selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) .big (b) .hero (c) #hero (d) #top
27. 27.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) p (b) #end (c) #note (d) .big
28. 28.True or false: #end is an id selector. (a) False (b) True
29. 29.🎯 Which element does the selector .box style? (a) <li class="menu"> (b) <h2 class="star"> (c) <h2 class="box"> (d) <h2 id="box">
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #note (b) #hero (c) .note (d) li
31. 31.True or false: .menu is an element selector. (a) True (b) False
32. 32.🎯 Can many elements share the same class? (a) No (b) Yes
33. 33.True or false: .menu is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .star (b) .box (c) h1 (d) .top
35. 35.🎯 Which element does the selector #hero style? (a) <h2 id="top"> (b) <li class="red"> (c) <h2 class="hero"> (d) <h2 id="hero">
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #logo (b) #big (c) .red (d) #end
37. 37.🎯 Which element does the selector .menu style? (a) <p class="note"> (b) <p class="menu"> (c) <p id="menu"> (d) <h1 class="big">
38. 38.True or false: img is an element selector. (a) False (b) True
39. 39.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h2> (c) <h1 class="star"> (d) <div id="intro">

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