CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 350 · 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 element does the selector #top style? (a) <p id="intro"> (b) <h1 class="box"> (c) <p class="top"> (d) <p id="top">
2. 2.True or false: .card is an element selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="red" id="intro">Hello</h1> (a) h2 (b) #main (c) .intro (d) #intro
4. 4.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="note"> (c) <h1 class="red"> (d) <p class="big">
5. 5.True or false: h1 is a class selector. (a) True (b) False
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
7. 7.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
8. 8.True or false: .note is a class selector. (a) False (b) True
9. 9.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
10. 10.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
11. 11.True or false: #hero is an id selector. (a) True (b) False
12. 12.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
13. 13.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) #big (b) .red (c) .hero (d) .big
14. 14.🎯 Which element does the selector #main style? (a) <div id="main"> (b) <span class="star"> (c) <div id="logo"> (d) <div class="main">
15. 15.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) .hero (b) span (c) div (d) #note
16. 16.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #end (b) .box (c) #box (d) .logo
17. 17.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="big"> (c) <h1 id="note"> (d) <h1 class="note">
18. 18.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <div id="end"> (c) <h1 class="menu"> (d) <h2>
19. 19.True or false: body is an element selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) .main (b) h1 (c) #main (d) .note
21. 21.True or false: p is an element selector. (a) False (b) True
22. 22.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) p (b) .logo (c) .big (d) span
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
25. 25.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p id="logo"> (c) <h1 class="note"> (d) <p class="logo">
26. 26.🎯 Which element does the selector .star style? (a) <h1 class="menu"> (b) <h2 class="note"> (c) <h1 id="star"> (d) <h1 class="star">
27. 27.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
28. 28.True or false: li is a class selector. (a) False (b) True
29. 29.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) h2 (b) .top (c) #top (d) #big
30. 30.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <li class="big"> (c) <h2 id="logo"> (d) <h2 class="main">
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) .big (b) #note (c) .note (d) .top
34. 34.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .end (b) #end (c) #red (d) div
35. 35.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #main (b) p (c) .big (d) span
36. 36.True or false: #logo is an id selector. (a) True (b) False
37. 37.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p id="big"> (c) <p class="red"> (d) <h1 class="box">
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .end (b) .note (c) #end (d) #hero
39. 39.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
40. 40.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #logo (b) .note (c) p (d) .main

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