CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 80 · 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?
   <span class="star" id="top">Hello</span> (a) #intro (b) #star (c) .menu (d) span
3. 3.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="menu"> (c) <li class="menu"> (d) <div id="main">
4. 4.True or false: p is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector h1 style? (a) <h1 class="box"> (b) <li class="box"> (c) <div id="intro"> (d) <h2>
6. 6.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) .red (b) #end (c) #big (d) #logo
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
9. 9.🎯 Which CSS selector matches this element?
   <div class="big" id="intro">Hello</div> (a) #big (b) #intro (c) span (d) .red
10. 10.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #main (b) span (c) .intro (d) p
11. 11.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) .star (b) p (c) #box (d) .end
12. 12.True or false: .star is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector #intro style? (a) <div class="menu"> (b) <li class="intro"> (c) <li id="intro"> (d) <li id="main">
14. 14.🎯 Which element does the selector #intro style? (a) <p class="red"> (b) <span id="intro"> (c) <span id="main"> (d) <span class="intro">
15. 15.True or false: .card is an id selector. (a) True (b) False
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) #main (b) li (c) .note (d) #logo
17. 17.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
18. 18.True or false: #hero is an element selector. (a) False (b) True
19. 19.🎯 Which element does the selector p style? (a) <h2 class="star"> (b) <p class="star"> (c) <li id="top"> (d) <h1>
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .main (b) #note (c) .big (d) .note
21. 21.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 class="main"> (c) <h2 class="box"> (d) <h1 id="logo">
22. 22.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <div class="big"> (c) <p class="big"> (d) <span>
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #main (b) h1 (c) .big (d) #note
24. 24.True or false: #hero is a class selector. (a) True (b) False
25. 25.🎯 Which element does the selector #intro style? (a) <h1 class="intro"> (b) <h2 class="note"> (c) <h1 id="intro"> (d) <h1 id="main">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .big (b) h2 (c) #intro (d) #note
27. 27.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
28. 28.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) div (b) .big (c) #note (d) li
29. 29.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) .intro (b) #menu (c) h1 (d) p
30. 30.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
32. 32.🎯 Which element does the selector li style? (a) <span class="box"> (b) <p id="logo"> (c) <div> (d) <li class="box">
33. 33.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #logo (b) div (c) #end (d) .star
34. 34.🎯 Can many elements share the same class? (a) Yes (b) No
35. 35.True or false: h1 is an id selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .logo (b) #logo (c) .box (d) #end
37. 37.True or false: .big is a class selector. (a) False (b) True
38. 38.🎯 Which element does the selector li style? (a) <span class="big"> (b) <p id="top"> (c) <li class="big"> (d) <div>
39. 39.🎯 Which element does the selector span style? (a) <span class="red"> (b) <h1 class="red"> (c) <p> (d) <h2 id="top">
40. 40.True or false: li is an element selector. (a) False (b) True

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