CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 458 · 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 #main? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
4. 4.True or false: .card is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector .box style? (a) <h2 class="star"> (b) <li class="menu"> (c) <h2 id="box"> (d) <h2 class="box">
6. 6.True or false: img is an element selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="red" id="intro">Hello</h2> (a) .intro (b) li (c) h2 (d) #red
8. 8.🎯 Which CSS selector matches this element?
   <span class="big" id="main">Hello</span> (a) #logo (b) #big (c) p (d) #main
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="big" id="hero">Hello</h1> (a) .hero (b) h1 (c) .red (d) #big
10. 10.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <span id="intro"> (c) <li> (d) <h2 class="note">
11. 11.True or false: #logo is an id selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="red" id="intro">Hello</h1> (a) .box (b) #intro (c) .intro (d) h2
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
15. 15.True or false: .note is an element selector. (a) True (b) False
16. 16.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <li id="intro"> (d) <h1>
17. 17.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) .top (b) #intro (c) p (d) .note
18. 18.True or false: p is an id selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) .star (b) li (c) #box (d) .hero
20. 20.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) .logo (b) #star (c) .menu (d) p
21. 21.True or false: .star is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h2 class="big"> (c) <h1> (d) <li id="top">
23. 23.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) h1 (b) #menu (c) .menu (d) .note
24. 24.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
26. 26.True or false: #logo is a class selector. (a) True (b) False
27. 27.True or false: .big is an id selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) li (b) div (c) #box (d) #intro
29. 29.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) li (b) #big (c) .end (d) .red
30. 30.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #star (b) div (c) li (d) #logo
31. 31.🎯 Which element does the selector .box style? (a) <li class="box"> (b) <li class="star"> (c) <div class="menu"> (d) <li id="box">
32. 32.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="red"> (c) <h2 class="red"> (d) <span id="main">
33. 33.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="main">Hello</h1> (a) h1 (b) .note (c) .main (d) #menu
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #end (b) #logo (c) .logo (d) #big
36. 36.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <div class="menu"> (c) <h2 class="menu"> (d) <li>
37. 37.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
38. 38.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
39. 39.True or false: .star is a class selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) li (b) #big (c) #end (d) .logo

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