CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 198 · 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?
   <span class="note" id="hero">Hello</span> (a) #top (b) p (c) span (d) .big
2. 2.True or false: img is an element selector. (a) False (b) True
3. 3.True or false: .big is an element selector. (a) True (b) False
4. 4.🎯 Which element does the selector .red style? (a) <div id="red"> (b) <span class="star"> (c) <div class="box"> (d) <div class="red">
5. 5.True or false: .card is an element selector. (a) False (b) True
6. 6.True or false: .menu is an element selector. (a) True (b) False
7. 7.True or false: .big is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="red" id="intro">Hello</h1> (a) #main (b) .intro (c) .box (d) #intro
9. 9.🎯 Which element does the selector #top style? (a) <p id="intro"> (b) <h1 class="big"> (c) <p class="top"> (d) <p id="top">
10. 10.🎯 Which CSS selector matches this element?
    <li class="box" id="top">Hello</li> (a) div (b) #box (c) .top (d) .box
11. 11.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) span (b) #top (c) p (d) .star
12. 12.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <li class="big"> (c) <h2 id="intro"> (d) <h2 class="intro">
13. 13.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) .intro (c) #intro (d) #note
14. 14.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #logo (b) .note (c) .main (d) .big
16. 16.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 class="box"> (c) <h2 class="star"> (d) <h1 id="red">
17. 17.True or false: .menu is a class selector. (a) False (b) True
18. 18.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
20. 20.True or false: img is a class selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) div (b) #menu (c) .main (d) .menu
22. 22.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="logo"> (c) <li> (d) <h2 class="menu">
23. 23.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #top (b) #note (c) .note (d) .hero
24. 24.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) .intro (b) .menu (c) .star (d) #main
26. 26.🎯 Which sign starts a class selector? (a) . (b) & (c) # (d) @
27. 27.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="top"> (c) <h2 id="hero"> (d) <li class="note">
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) #logo (b) .main (c) .menu (d) .star
29. 29.True or false: .note is a class selector. (a) True (b) False
30. 30.True or false: #hero is an id selector. (a) False (b) True
31. 31.🎯 Which element does the selector .note style? (a) <p class="big"> (b) <p id="note"> (c) <p class="note"> (d) <h1 class="red">
32. 32.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
33. 33.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) p (b) .note (c) #note (d) .hero
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) .red (b) #hero (c) #end (d) #big
35. 35.🎯 Can many elements share the same class? (a) No (b) Yes
36. 36.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #star (b) .top (c) h1 (d) #top
37. 37.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
38. 38.True or false: #end is an element selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <div class="note" id="logo">Hello</div> (a) .logo (b) #logo (c) .big (d) #note
40. 40.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector

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