CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 691 · 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 sign starts an id selector? (a) . (b) & (c) # (d) @
2. 2.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Which element does the selector div style? (a) <div class="note"> (b) <h1 id="main"> (c) <span> (d) <p class="note">
4. 4.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
5. 5.True or false: #main is an element selector. (a) True (b) False
6. 6.True or false: h1 is an element selector. (a) False (b) True
7. 7.🎯 Which sign starts a class selector? (a) . (b) # (c) @ (d) &
8. 8.True or false: #top is a class selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <span class="box" id="end">Hello</span> (a) p (b) #box (c) .end (d) span
10. 10.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="menu"> (d) <h2 class="menu">
11. 11.True or false: .menu is a class selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #red (b) .box (c) #intro (d) li
13. 13.🎯 Which element does the selector .red style? (a) <p id="red"> (b) <h1 class="star"> (c) <p class="box"> (d) <p class="red">
14. 14.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #note (b) .big (c) #end (d) h2
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) h1 (b) #top (c) .hero (d) .box
17. 17.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <h1 class="note"> (c) <p class="star"> (d) <p id="star">
19. 19.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
20. 20.🎯 Which element does the selector li style? (a) <span class="big"> (b) <li class="big"> (c) <p id="hero"> (d) <div>
21. 21.🎯 Which element does the selector #intro style? (a) <div class="intro"> (b) <div id="main"> (c) <div id="intro"> (d) <span class="menu">
22. 22.True or false: .big is a class selector. (a) False (b) True
23. 23.True or false: img is an id selector. (a) True (b) False
24. 24.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <span class="menu"> (c) <h1 class="menu"> (d) <p>
25. 25.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
26. 26.True or false: .card is a class selector. (a) True (b) False
27. 27.🎯 What kind of selector is .star? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Can many elements share the same class? (a) No (b) Yes
29. 29.🎯 Which CSS selector matches this element?
    <p class="note" id="top">Hello</p> (a) .top (b) #intro (c) h1 (d) .note
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="logo">Hello</h2> (a) li (b) .logo (c) .note (d) h2
31. 31.True or false: .note is an id selector. (a) True (b) False
32. 32.🎯 Which element does the selector #main style? (a) <h1 class="note"> (b) <p id="logo"> (c) <p id="main"> (d) <p class="main">
33. 33.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) div (c) span (d) .menu
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <div class="menu"> (c) <h1 id="intro"> (d) <p class="menu">
35. 35.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) .top (b) p (c) #top (d) #intro
36. 36.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) #note (b) li (c) div (d) .top
37. 37.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .top (b) div (c) #top (d) .big
39. 39.True or false: body is a class selector. (a) False (b) True
40. 40.True or false: li is an element selector. (a) True (b) False

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