CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 622 · 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 sign starts a class selector? (a) . (b) # (c) & (d) @
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="box" id="main">Hello</h2> (a) #logo (b) h2 (c) .star (d) li
3. 3.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
4. 4.🎯 Which CSS selector matches this element?
   <span class="star" id="hero">Hello</span> (a) span (b) p (c) .hero (d) .menu
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="note" id="top">Hello</h1> (a) #intro (b) .top (c) .big (d) #top
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
7. 7.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <p> (c) <span class="box"> (d) <h2 id="logo">
8. 8.🎯 Which element does the selector .star style? (a) <p class="note"> (b) <span class="menu"> (c) <span class="star"> (d) <span id="star">
9. 9.🎯 Which CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) #intro (b) #star (c) .intro (d) #main
10. 10.🎯 Which CSS selector matches this element?
    <div class="box" id="main">Hello</div> (a) #logo (b) div (c) #box (d) span
11. 11.🎯 Which element does the selector span style? (a) <h2 id="hero"> (b) <h1 class="note"> (c) <span class="note"> (d) <p>
12. 12.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
13. 13.True or false: .note is an id selector. (a) False (b) True
14. 14.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) div (b) #logo (c) .main (d) #big
15. 15.🎯 Which element does the selector #hero style? (a) <h2 class="star"> (b) <h1 class="hero"> (c) <h1 id="top"> (d) <h1 id="hero">
16. 16.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #red (b) .red (c) .box (d) .top
17. 17.True or false: .star is an id selector. (a) True (b) False
18. 18.True or false: #end is an id selector. (a) True (b) False
19. 19.True or false: #logo is an element selector. (a) False (b) True
20. 20.True or false: .menu is an element selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) p (b) #hero (c) .note (d) .end
22. 22.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #top (b) .red (c) div (d) li
23. 23.True or false: img is an element selector. (a) False (b) True
24. 24.🎯 Which element does the selector #intro style? (a) <h2 id="intro"> (b) <h2 class="intro"> (c) <li class="menu"> (d) <h2 id="main">
25. 25.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) .star (b) #box (c) .box (d) .intro
26. 26.🎯 Which CSS selector matches this element?
    <span class="big" id="top">Hello</span> (a) #intro (b) .red (c) span (d) .top
27. 27.🎯 Can many elements share the same class? (a) No (b) Yes
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) .end (b) #red (c) .box (d) h2
29. 29.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
30. 30.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #end (b) li (c) #hero (d) .note
31. 31.🎯 Which element does the selector .red style? (a) <span class="box"> (b) <p class="star"> (c) <span id="red"> (d) <span class="red">
32. 32.🎯 Which element does the selector li style? (a) <div> (b) <span class="star"> (c) <li class="star"> (d) <p id="hero">
33. 33.🎯 Which element does the selector .box style? (a) <h2 class="menu"> (b) <h1 class="box"> (c) <h1 class="star"> (d) <h1 id="box">
34. 34.🎯 Which element does the selector #hero style? (a) <p id="top"> (b) <h1 class="big"> (c) <p id="hero"> (d) <p class="hero">
35. 35.🎯 Which element does the selector #hero style? (a) <li id="top"> (b) <div class="red"> (c) <li id="hero"> (d) <li class="hero">
36. 36.🎯 Which element does the selector #logo style? (a) <p class="big"> (b) <span id="end"> (c) <span class="logo"> (d) <span id="logo">
37. 37.🎯 What kind of selector is h1? (a) a class selector (b) an element selector (c) an id selector
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) .big (b) #note (c) #logo (d) .note
39. 39.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .red (b) .end (c) .big (d) #big
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) .logo (b) h2 (c) #end (d) #logo

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