CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 738 · 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: #hero is an element selector. (a) False (b) True
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which CSS selector matches this element?
   <h2 class="note" id="main">Hello</h2> (a) h2 (b) .big (c) #logo (d) #note
5. 5.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) #end (b) #big (c) p (d) h1
6. 6.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which CSS selector matches this element?
   <li class="note" id="end">Hello</li> (a) div (b) #note (c) li (d) .end
8. 8.🎯 Which sign starts an id selector? (a) & (b) . (c) # (d) @
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="logo">Hello</span> (a) p (b) #logo (c) #big (d) .logo
10. 10.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="box"> (c) <li id="main"> (d) <li class="main">
12. 12.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 id="hero"> (c) <h2 class="red"> (d) <h1 class="hero">
13. 13.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) h1 (b) #main (c) #logo (d) .main
14. 14.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) #logo (b) div (c) .main (d) .red
15. 15.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) #hero (b) #top (c) #big (d) h1
16. 16.True or false: h1 is an element selector. (a) False (b) True
17. 17.True or false: .note is an id selector. (a) True (b) False
18. 18.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <li class="box"> (c) <h2 class="intro"> (d) <h2 id="intro">
19. 19.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) .big (b) #note (c) div (d) .note
20. 20.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
21. 21.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #main (b) .big (c) span (d) .intro
22. 22.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) h1 (b) .red (c) .big (d) #big
24. 24.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <span class="star" id="main">Hello</span> (a) p (b) .star (c) #logo (d) #star
26. 26.🎯 Which element does the selector h2 style? (a) <div class="note"> (b) <h2 class="note"> (c) <span id="end"> (d) <li>
27. 27.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="end"> (c) <h2 class="red"> (d) <li>
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .logo (b) #end (c) .box (d) .star
29. 29.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) .menu (b) .logo (c) #end (d) .note
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="hero">Hello</h1> (a) #hero (b) #menu (c) .hero (d) h2
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="big" id="end">Hello</h1> (a) #big (b) h2 (c) .big (d) #hero
32. 32.True or false: .menu is an id selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) h2 (b) h1 (c) .logo (d) .red
34. 34.True or false: #top is an id selector. (a) False (b) True
35. 35.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
36. 36.🎯 Which element does the selector h1 style? (a) <li class="star"> (b) <h2> (c) <h1 class="star"> (d) <div id="intro">
37. 37.🎯 Which element does the selector p style? (a) <h2 class="red"> (b) <p class="red"> (c) <h1> (d) <li id="top">
38. 38.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .note (b) #menu (c) #main (d) div
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) .red (b) .top (c) .big (d) li

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