CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 103 · 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 p? (a) an element selector (b) an id selector (c) a class selector
2. 2.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
3. 3.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <h2 id="top"> (c) <p> (d) <span class="red">
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="logo">Hello</p> (a) .logo (b) .box (c) .red (d) #red
5. 5.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
6. 6.True or false: .menu is a class selector. (a) True (b) False
7. 7.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <div class="red"> (c) <div class="box"> (d) <span class="star">
8. 8.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="note"> (c) <p> (d) <span class="note">
9. 9.🎯 Which CSS selector matches this element?
   <h1 class="red" id="top">Hello</h1> (a) #red (b) .red (c) h2 (d) .top
10. 10.🎯 Can many elements share the same class? (a) No (b) Yes
11. 11.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 id="star"> (c) <h1 class="star"> (d) <h1 class="menu">
12. 12.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .star (b) .top (c) .menu (d) h1
13. 13.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h2 class="menu"> (c) <h1 class="box"> (d) <h1 class="star">
14. 14.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
15. 15.True or false: body is a class selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <span class="big" id="logo">Hello</span> (a) .red (b) #big (c) #logo (d) .logo
17. 17.🎯 Which element does the selector #top style? (a) <h2 id="top"> (b) <h2 id="intro"> (c) <h2 class="top"> (d) <li class="red">
18. 18.🎯 Which sign starts an id selector? (a) # (b) . (c) & (d) @
19. 19.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) #logo (b) #note (c) .logo (d) #end
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) li (b) .top (c) h2 (d) .red
21. 21.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="star" id="logo">Hello</h2> (a) li (b) #star (c) .menu (d) .star
23. 23.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) #note (b) span (c) .hero (d) #top
24. 24.True or false: p is a class selector. (a) True (b) False
25. 25.True or false: .card is a class selector. (a) False (b) True
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) #menu (b) h2 (c) #intro (d) .note
27. 27.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span class="intro"> (c) <span id="intro"> (d) <p class="big">
28. 28.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
29. 29.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
30. 30.🎯 Which element does the selector h1 style? (a) <h2> (b) <div id="intro"> (c) <li class="big"> (d) <h1 class="big">
31. 31.True or false: img is a class selector. (a) True (b) False
32. 32.True or false: .menu is an element selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) span (b) .top (c) p (d) .red
34. 34.True or false: #hero is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) div (b) #logo (c) .note (d) #menu
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) h2 (b) #end (c) h1 (d) .logo
37. 37.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
38. 38.True or false: .big is a class selector. (a) True (b) False
39. 39.True or false: #top is a class selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) div (b) #top (c) .note (d) .hero

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