CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 422 · 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 CSS selector matches this element?
   <li class="menu" id="intro">Hello</li> (a) #intro (b) .note (c) #menu (d) div
2. 2.🎯 Can many elements share the same class? (a) No (b) Yes
3. 3.True or false: li is an element selector. (a) False (b) True
4. 4.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
6. 6.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h1> (c) <h2 class="box"> (d) <p class="box">
8. 8.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) li (b) #red (c) #logo (d) .box
9. 9.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
10. 10.🎯 Which element does the selector span style? (a) <p> (b) <span class="menu"> (c) <h1 class="menu"> (d) <h2 id="logo">
11. 11.True or false: img is a class selector. (a) False (b) True
12. 12.🎯 Which element does the selector #hero style? (a) <h2 class="star"> (b) <h1 id="hero"> (c) <h1 id="top"> (d) <h1 class="hero">
13. 13.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 2 (d) 1
15. 15.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .star (b) #star (c) .menu (d) .top
16. 16.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
18. 18.True or false: .menu is a class selector. (a) True (b) False
19. 19.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <span class="big"> (c) <h1 class="big"> (d) <p>
20. 20.True or false: .menu is an element selector. (a) True (b) False
21. 21.🎯 Which element does the selector .note style? (a) <li id="note"> (b) <li class="big"> (c) <div class="red"> (d) <li class="note">
22. 22.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <p class="big"> (d) <h2 class="big">
23. 23.True or false: h1 is an element selector. (a) False (b) True
24. 24.True or false: .card is a class selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) h1 (b) #logo (c) p (d) #red
26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) .top (c) span (d) .star
27. 27.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .big (b) #big (c) #main (d) .red
28. 28.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) p (b) .menu (c) #main (d) #intro
29. 29.True or false: .card is an element selector. (a) False (b) True
30. 30.True or false: p is an id selector. (a) True (b) False
31. 31.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="box"> (d) <h1 class="red">
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) .note (c) #note (d) .intro
33. 33.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 What kind of selector is .big? (a) an element selector (b) an id selector (c) a class selector
35. 35.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p class="star">
37. 37.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
38. 38.True or false: p is a class selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <span class="menu" id="main">Hello</span> (a) #logo (b) .menu (c) .note (d) #menu
40. 40.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) h1 (c) #note (d) .note

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