CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 329 · 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: .note is an element selector. (a) False (b) True
2. 2.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which sign starts an id selector? (a) @ (b) . (c) & (d) #
4. 4.🎯 Which CSS selector matches this element?
   <h1 class="big" id="top">Hello</h1> (a) .top (b) .big (c) #big (d) #intro
5. 5.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) #end (b) #note (c) #hero (d) .end
6. 6.🎯 Which CSS selector matches this element?
   <div class="star" id="logo">Hello</div> (a) #end (b) span (c) div (d) #star
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="box" id="top">Hello</h1> (a) #box (b) h2 (c) .box (d) #intro
8. 8.🎯 Can many elements share the same class? (a) Yes (b) No
9. 9.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
10. 10.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="big"> (c) <p id="big"> (d) <p class="red">
11. 11.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="end"> (c) <li> (d) <h2 class="menu">
12. 12.🎯 Which sign starts a class selector? (a) @ (b) # (c) & (d) .
13. 13.🎯 Which element does the selector .big style? (a) <li id="big"> (b) <li class="red"> (c) <li class="big"> (d) <div class="box">
14. 14.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
15. 15.🎯 What kind of selector is #hero? (a) an element selector (b) a class selector (c) an id selector
16. 16.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
17. 17.True or false: .big is a class selector. (a) True (b) False
18. 18.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) div (b) li (c) .big (d) .main
20. 20.True or false: p is an id selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <span class="menu" id="intro">Hello</span> (a) p (b) #main (c) .menu (d) .intro
22. 22.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="hero"> (c) <h1 class="star"> (d) <p id="end">
23. 23.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h2 class="box"> (c) <h1 id="big"> (d) <h1 class="big">
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #top (b) .hero (c) .box (d) #hero
25. 25.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="intro"> (c) <li class="big"> (d) <h2 id="main">
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) .big (c) span (d) div
27. 27.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) .intro (b) #box (c) li (d) #main
28. 28.True or false: .star is an element selector. (a) False (b) True
29. 29.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="big"> (c) <span id="big"> (d) <span class="red">
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) #end (b) #logo (c) #red (d) .logo
31. 31.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
32. 32.True or false: #end is an id selector. (a) True (b) False
33. 33.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <h1 class="note"> (c) <p class="star"> (d) <p class="menu">
34. 34.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #main (b) .intro (c) span (d) .red
35. 35.🎯 Which element does the selector div style? (a) <p class="red"> (b) <div class="red"> (c) <span> (d) <h1 id="hero">
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .menu (b) .note (c) #main (d) #menu
37. 37.True or false: .card is a class selector. (a) True (b) False
38. 38.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #intro (b) h1 (c) .top (d) #box
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #box (b) .end (c) h1 (d) #hero
40. 40.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <li class="box">

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