CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 432 · 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.True or false: #end is an element selector. (a) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <li class="note" id="logo">Hello</li> (a) .note (b) .big (c) #end (d) .logo
3. 3.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
4. 4.🎯 Which CSS selector matches this element?
   <p class="box" id="logo">Hello</p> (a) .logo (b) #end (c) p (d) h1
5. 5.🎯 Which element does the selector div style? (a) <span> (b) <p class="box"> (c) <h1 id="top"> (d) <div class="box">
6. 6.🎯 Which sign starts a class selector? (a) # (b) . (c) & (d) @
7. 7.🎯 Which element does the selector h2 style? (a) <span id="logo"> (b) <div class="big"> (c) <li> (d) <h2 class="big">
8. 8.🎯 Which CSS selector matches this element?
   <h1 class="note" id="hero">Hello</h1> (a) .hero (b) #top (c) .note (d) #note
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) div (c) #hero (d) .note
11. 11.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which element does the selector .box style? (a) <span class="star"> (b) <span id="box"> (c) <span class="box"> (d) <p class="menu">
13. 13.True or false: .big is a class selector. (a) False (b) True
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
16. 16.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <p class="big"> (c) <span id="top"> (d) <span id="hero">
17. 17.🎯 Which element does the selector h2 style? (a) <h2 class="menu"> (b) <span id="hero"> (c) <li> (d) <div class="menu">
18. 18.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) .intro (b) .star (c) .menu (d) #main
20. 20.🎯 Which element does the selector .box style? (a) <p class="star"> (b) <p id="box"> (c) <h1 class="menu"> (d) <p class="box">
21. 21.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
22. 22.True or false: img is an element selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .star (b) #intro (c) h2 (d) h1
24. 24.True or false: p is an id selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) p (b) .hero (c) .red (d) #hero
26. 26.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) h2 (b) .end (c) #hero (d) .red
28. 28.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h2 id="hero"> (c) <h1 class="red"> (d) <p>
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .top (b) #big (c) h2 (d) #top
30. 30.True or false: #hero is an id selector. (a) False (b) True
31. 31.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) #menu (b) h1 (c) .menu (d) .hero
33. 33.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) #big (b) span (c) .end (d) p
35. 35.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) .star (b) #star (c) .main (d) .menu
36. 36.True or false: h1 is an element selector. (a) True (b) False
37. 37.True or false: .card is an id selector. (a) True (b) False
38. 38.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .big (b) #big (c) .red (d) #end
40. 40.True or false: .star is an id selector. (a) True (b) False

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