CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 625 · 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 .note? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which element does the selector li style? (a) <div> (b) <span class="note"> (c) <p id="intro"> (d) <li class="note">
3. 3.🎯 Which CSS selector matches this element?
   <div class="red" id="end">Hello</div> (a) div (b) #hero (c) #red (d) .end
4. 4.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="star"> (c) <span class="star"> (d) <p>
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) h2 (b) .menu (c) #intro (d) .intro
7. 7.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) .big (b) p (c) #intro (d) #note
8. 8.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <div class="menu" id="top">Hello</div> (a) .top (b) .menu (c) #menu (d) #intro
10. 10.True or false: body is an element selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .intro (b) #main (c) #box (d) div
12. 12.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which element does the selector p style? (a) <li id="hero"> (b) <h1> (c) <h2 class="note"> (d) <p class="note">
14. 14.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <li id="menu"> (c) <div class="big"> (d) <li class="menu">
15. 15.🎯 Which element does the selector .note style? (a) <p class="red"> (b) <span class="big"> (c) <span id="note"> (d) <span class="note">
16. 16.True or false: #hero is an id selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .intro (b) #main (c) #intro (d) .big
18. 18.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
19. 19.True or false: .card is a class selector. (a) False (b) True
20. 20.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) #big (b) h1 (c) .main (d) .big
21. 21.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) .star (b) .menu (c) span (d) .hero
22. 22.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #star (b) #end (c) .star (d) .menu
24. 24.True or false: .star is an id selector. (a) True (b) False
25. 25.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
26. 26.True or false: #top is an element selector. (a) True (b) False
27. 27.🎯 Which CSS selector matches this element?
    <div class="box" id="logo">Hello</div> (a) .logo (b) #box (c) div (d) #end
28. 28.🎯 What kind of selector is #main? (a) an id selector (b) a class selector (c) an element selector
29. 29.True or false: #main is an id selector. (a) False (b) True
30. 30.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which element does the selector h2 style? (a) <span id="end"> (b) <h2 class="box"> (c) <li> (d) <div class="box">
32. 32.🎯 Which element does the selector #end style? (a) <li class="red"> (b) <h2 id="hero"> (c) <h2 id="end"> (d) <h2 class="end">
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) .end (b) .star (c) #box (d) .box
34. 34.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
35. 35.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h1 class="red"> (c) <li class="red"> (d) <h2>
36. 36.🎯 Which CSS selector matches this element?
    <div class="note" id="top">Hello</div> (a) .note (b) .big (c) #intro (d) span
37. 37.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) span (b) .big (c) .main (d) p
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) #box (b) #hero (c) .box (d) .star
39. 39.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .star (b) .top (c) span (d) #box
40. 40.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <li class="top"> (c) <div class="note"> (d) <li id="intro">

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