CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 897 · 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.🎯 How many elements on a page should have the same id? (a) 1 (b) any number (c) 5 (d) 2
2. 2.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
4. 4.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="hero">Hello</h1> (a) h1 (b) h2 (c) .note (d) #top
6. 6.True or false: h1 is an element selector. (a) True (b) False
7. 7.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <li id="end"> (c) <div class="red"> (d) <li id="hero">
8. 8.🎯 Which CSS selector matches this element?
   <span class="star" id="intro">Hello</span> (a) #star (b) p (c) span (d) .intro
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .big (b) li (c) .top (d) h2
10. 10.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <p class="star"> (d) <span class="red">
11. 11.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h2 class="big"> (d) <h1 id="logo">
12. 12.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
13. 13.True or false: li is a class selector. (a) True (b) False
14. 14.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="big"> (c) <span id="big"> (d) <span class="red">
18. 18.🎯 Which CSS selector matches this element?
    <span class="red" id="end">Hello</span> (a) #hero (b) #red (c) .end (d) span
19. 19.🎯 What kind of selector is #hero? (a) a class selector (b) an id selector (c) an element selector
20. 20.🎯 Which element does the selector p style? (a) <h1> (b) <p class="star"> (c) <h2 class="star"> (d) <li id="logo">
21. 21.🎯 Which element does the selector #logo style? (a) <h1 id="logo"> (b) <h2 class="red"> (c) <h1 id="end"> (d) <h1 class="logo">
22. 22.🎯 What kind of selector is .star? (a) an id selector (b) a class selector (c) an element selector
23. 23.True or false: .note is a class selector. (a) True (b) False
24. 24.🎯 Which element does the selector .red style? (a) <h2 class="red"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="box">
25. 25.🎯 Which element does the selector h2 style? (a) <li> (b) <div class="note"> (c) <h2 class="note"> (d) <span id="end">
26. 26.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <p> (c) <span class="big"> (d) <h1 class="big">
27. 27.🎯 Which CSS selector matches this element?
    <div class="note" id="hero">Hello</div> (a) #hero (b) .big (c) #note (d) #top
28. 28.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) .big (b) #big (c) .logo (d) h2
29. 29.🎯 Which element does the selector #top style? (a) <p class="top"> (b) <p id="intro"> (c) <h1 class="note"> (d) <p id="top">
30. 30.🎯 Which element does the selector #intro style? (a) <h2 class="red"> (b) <h1 id="main"> (c) <h1 id="intro"> (d) <h1 class="intro">
31. 31.True or false: li is an element selector. (a) True (b) False
32. 32.🎯 Which element does the selector p style? (a) <h1> (b) <li id="main"> (c) <p class="note"> (d) <h2 class="note">
33. 33.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li id="menu"> (c) <li class="menu"> (d) <li class="note">
34. 34.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) #star (b) .intro (c) .star (d) div
35. 35.🎯 Which element does the selector #main style? (a) <div class="main"> (b) <div id="logo"> (c) <div id="main"> (d) <span class="red">
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .end (b) h2 (c) li (d) #hero
37. 37.True or false: .star is a class selector. (a) True (b) False
38. 38.True or false: li is an id selector. (a) True (b) False
39. 39.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector

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