CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 411 · 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.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: img is a class selector. (a) False (b) True
3. 3.🎯 Which CSS selector matches this element?
   <span class="star" id="main">Hello</span> (a) #main (b) .menu (c) p (d) #star
4. 4.🎯 Which element does the selector .note style? (a) <h2 class="big"> (b) <li class="red"> (c) <h2 id="note"> (d) <h2 class="note">
5. 5.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div class="red"> (d) <div id="big">
6. 6.🎯 Which element does the selector #logo style? (a) <p class="logo"> (b) <p id="end"> (c) <p id="logo"> (d) <h1 class="red">
7. 7.🎯 Which sign starts a class selector? (a) @ (b) . (c) # (d) &
8. 8.🎯 Which CSS selector matches this element?
   <div class="box" id="main">Hello</div> (a) .main (b) span (c) .star (d) div
9. 9.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) .big (b) #main (c) span (d) .intro
10. 10.🎯 Which element does the selector #intro style? (a) <span class="red"> (b) <div id="main"> (c) <div id="intro"> (d) <div class="intro">
11. 11.🎯 How many elements on a page should have the same id? (a) 5 (b) any number (c) 1 (d) 2
12. 12.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
13. 13.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <p class="note" id="main">Hello</p> (a) #logo (b) .big (c) p (d) .main
15. 15.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p id="big"> (c) <p class="big"> (d) <p class="red">
16. 16.True or false: .star is an element selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) .end (b) p (c) h1 (d) .note
18. 18.🎯 Which element does the selector #end style? (a) <h2 class="menu"> (b) <h1 id="end"> (c) <h1 id="hero"> (d) <h1 class="end">
19. 19.🎯 Which CSS selector matches this element?
    <li class="menu" id="end">Hello</li> (a) #hero (b) li (c) div (d) #menu
20. 20.🎯 Can many elements share the same class? (a) No (b) Yes
21. 21.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h2 class="star"> (c) <li id="logo"> (d) <h1>
23. 23.🎯 Which element does the selector li style? (a) <li class="note"> (b) <p id="end"> (c) <div> (d) <span class="note">
24. 24.🎯 Which CSS selector matches this element?
    <li class="star" id="hero">Hello</li> (a) div (b) #top (c) .hero (d) li
25. 25.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) h2 (b) h1 (c) #note (d) #top
27. 27.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Which element does the selector .menu style? (a) <h1 class="big"> (b) <p id="menu"> (c) <p class="note"> (d) <p class="menu">
29. 29.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
30. 30.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which element does the selector .star style? (a) <p class="star"> (b) <p class="menu"> (c) <h1 class="note"> (d) <p id="star">
32. 32.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
33. 33.🎯 Which CSS selector matches this element?
    <p class="menu" id="hero">Hello</p> (a) h1 (b) #menu (c) .note (d) .menu
34. 34.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) span (b) .note (c) #menu (d) #top
35. 35.True or false: .big is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .big (b) div (c) #note (d) span
37. 37.🎯 Which element does the selector #end style? (a) <li id="end"> (b) <li class="end"> (c) <li id="hero"> (d) <div class="red">
38. 38.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) span (b) .note (c) #intro (d) #menu
39. 39.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <p class="red"> (d) <h1 class="star">
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #note (b) .hero (c) span (d) #hero

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