CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 313 · 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 CSS selector matches this element?
   <p class="red" id="intro">Hello</p> (a) p (b) .intro (c) #main (d) h1
2. 2.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
3. 3.True or false: #end is an id selector. (a) True (b) False
4. 4.🎯 Which sign starts a class selector? (a) @ (b) & (c) # (d) .
5. 5.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
6. 6.🎯 Which CSS selector matches this element?
   <li class="red" id="hero">Hello</li> (a) .hero (b) #red (c) .box (d) .red
7. 7.True or false: #main is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <div class="star" id="logo">Hello</div> (a) #star (b) #end (c) .star (d) span
9. 9.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
10. 10.🎯 Which element does the selector .note style? (a) <p id="note"> (b) <p class="note"> (c) <h1 class="red"> (d) <p class="big">
11. 11.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <li id="top"> (c) <h1> (d) <p class="star">
12. 12.🎯 Which element does the selector #end style? (a) <span id="end"> (b) <span id="hero"> (c) <span class="end"> (d) <p class="star">
13. 13.True or false: #hero is an id selector. (a) True (b) False
14. 14.🎯 Can many elements share the same class? (a) No (b) Yes
15. 15.🎯 Which element does the selector .big style? (a) <p class="big"> (b) <p class="red"> (c) <h1 class="box"> (d) <p id="big">
16. 16.True or false: li is an element selector. (a) False (b) True
17. 17.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
18. 18.True or false: #top is an id selector. (a) True (b) False
19. 19.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
20. 20.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
21. 21.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
22. 22.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="red"> (c) <li id="intro"> (d) <p class="red">
23. 23.True or false: .big is a class selector. (a) True (b) False
24. 24.True or false: .star is a class selector. (a) True (b) False
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="star" id="hero">Hello</h1> (a) #star (b) #top (c) h2 (d) .star
26. 26.🎯 Which element does the selector .box style? (a) <h2 class="box"> (b) <li class="menu"> (c) <h2 class="star"> (d) <h2 id="box">
27. 27.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .logo (b) span (c) .red (d) .big
28. 28.🎯 Which element does the selector #end style? (a) <div id="end"> (b) <div class="end"> (c) <div id="hero"> (d) <span class="note">
29. 29.🎯 Which CSS selector matches this element?
    <span class="red" id="top">Hello</span> (a) .red (b) #intro (c) .box (d) #red
30. 30.True or false: .note is a class selector. (a) True (b) False
31. 31.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h1 id="intro"> (c) <h2 class="big"> (d) <h1 class="top">
32. 32.🎯 Which CSS selector matches this element?
    <div class="big" id="hero">Hello</div> (a) .red (b) .big (c) .hero (d) #top
33. 33.True or false: p is an element selector. (a) False (b) True
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="logo"> (c) <div class="star"> (d) <p class="star">
35. 35.True or false: .menu is a class selector. (a) False (b) True
36. 36.🎯 What kind of selector is p? (a) a class selector (b) an id selector (c) an element selector
37. 37.🎯 Which element does the selector #top style? (a) <li class="red"> (b) <h2 id="top"> (c) <h2 class="top"> (d) <h2 id="intro">
38. 38.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="top"> (c) <div class="big"> (d) <p class="big">
39. 39.🎯 Which element does the selector h1 style? (a) <li class="menu"> (b) <div id="hero"> (c) <h1 class="menu"> (d) <h2>
40. 40.🎯 Which element does the selector div style? (a) <div class="red"> (b) <p class="red"> (c) <span> (d) <h1 id="intro">

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