CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 990 · 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?
   <h2 class="box" id="top">Hello</h2> (a) .star (b) .box (c) .top (d) li
2. 2.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Which sign starts an id selector? (a) @ (b) # (c) . (d) &
4. 4.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which CSS selector matches this element?
   <li class="red" id="hero">Hello</li> (a) .red (b) .box (c) div (d) #top
6. 6.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="intro">Hello</p> (a) .intro (b) p (c) #menu (d) #main
8. 8.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
9. 9.🎯 Which element does the selector li style? (a) <div> (b) <p id="end"> (c) <span class="red"> (d) <li class="red">
10. 10.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
11. 11.🎯 Can many elements share the same class? (a) No (b) Yes
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) #main (c) h2 (d) #intro
13. 13.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <span class="big"> (c) <div class="hero"> (d) <div id="top">
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) .top (b) p (c) #intro (d) #box
15. 15.🎯 Which element does the selector .star style? (a) <li class="menu"> (b) <li id="star"> (c) <div class="note"> (d) <li class="star">
16. 16.🎯 Which CSS selector matches this element?
    <p class="star" id="hero">Hello</p> (a) .hero (b) p (c) h1 (d) .menu
17. 17.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector p style? (a) <p class="box"> (b) <h2 class="box"> (c) <li id="logo"> (d) <h1>
19. 19.True or false: .menu is a class selector. (a) False (b) True
20. 20.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h2> (c) <h1 class="star"> (d) <div id="end">
21. 21.True or false: .star is a class selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <div class="big" id="top">Hello</div> (a) #big (b) .top (c) div (d) .red
23. 23.True or false: .star is an id selector. (a) True (b) False
24. 24.True or false: .menu is an element selector. (a) True (b) False
25. 25.🎯 Which element does the selector #main style? (a) <span id="main"> (b) <span class="main"> (c) <p class="menu"> (d) <span id="logo">
26. 26.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h2 class="note"> (d) <h1 id="hero">
27. 27.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) #note (b) .top (c) .note (d) #intro
28. 28.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <div> (c) <li class="menu"> (d) <p id="logo">
29. 29.True or false: body is an element selector. (a) False (b) True
30. 30.True or false: h1 is a class selector. (a) False (b) True
31. 31.🎯 Which CSS selector matches this element?
    <p class="red" id="hero">Hello</p> (a) #top (b) h1 (c) #red (d) p
32. 32.True or false: p is a class selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <p class="menu" id="top">Hello</p> (a) #menu (b) .note (c) .menu (d) h1
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) .star (b) h2 (c) h1 (d) #box
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) #red (b) div (c) .box (d) span
36. 36.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
37. 37.True or false: #end is a class selector. (a) False (b) True
38. 38.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #hero (b) p (c) .end (d) .box
39. 39.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .red (b) #hero (c) #big (d) #top
40. 40.🎯 What kind of selector is li? (a) an id selector (b) an element selector (c) a class selector

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