CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 301 · 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 element does the selector #hero style? (a) <div class="star"> (b) <li id="top"> (c) <li class="hero"> (d) <li id="hero">
2. 2.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
3. 3.🎯 Which element does the selector li style? (a) <div> (b) <span class="red"> (c) <li class="red"> (d) <p id="intro">
4. 4.🎯 Which CSS selector matches this element?
   <p class="star" id="top">Hello</p> (a) .top (b) h1 (c) #star (d) .star
5. 5.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
6. 6.🎯 Which CSS selector matches this element?
   <li class="menu" id="logo">Hello</li> (a) div (b) #menu (c) .menu (d) .note
7. 7.True or false: #hero is an id selector. (a) False (b) True
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
9. 9.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) #logo (b) .main (c) h1 (d) #main
11. 11.🎯 Which element does the selector #logo style? (a) <p id="logo"> (b) <p id="end"> (c) <p class="logo"> (d) <h1 class="red">
12. 12.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) .red (b) span (c) #main (d) #big
13. 13.True or false: .big is a class selector. (a) True (b) False
14. 14.🎯 Which CSS selector matches this element?
    <li class="red" id="intro">Hello</li> (a) li (b) .intro (c) #main (d) div
15. 15.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
16. 16.True or false: img is a class selector. (a) True (b) False
17. 17.True or false: img is an element selector. (a) True (b) False
18. 18.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <li id="main"> (c) <div class="menu"> (d) <li class="intro">
19. 19.True or false: #end is an id selector. (a) True (b) False
20. 20.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
21. 21.🎯 Which element does the selector p style? (a) <p class="big"> (b) <h2 class="big"> (c) <h1> (d) <li id="intro">
22. 22.True or false: p is an element selector. (a) True (b) False
23. 23.True or false: #main is an id selector. (a) True (b) False
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) #star (b) .logo (c) .star (d) h2
25. 25.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="intro"> (c) <div class="big"> (d) <p class="big">
26. 26.🎯 Which element does the selector #intro style? (a) <p id="intro"> (b) <p class="intro"> (c) <h1 class="menu"> (d) <p id="main">
27. 27.🎯 Which element does the selector h1 style? (a) <div id="logo"> (b) <h1 class="box"> (c) <li class="box"> (d) <h2>
28. 28.True or false: #top is a class selector. (a) True (b) False
29. 29.🎯 Which element does the selector #main style? (a) <li id="logo"> (b) <div class="menu"> (c) <li id="main"> (d) <li class="main">
30. 30.🎯 Which element does the selector li style? (a) <span class="star"> (b) <p id="end"> (c) <li class="star"> (d) <div>
31. 31.🎯 Which element does the selector h2 style? (a) <div class="big"> (b) <li> (c) <h2 class="big"> (d) <span id="top">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) .red (b) #big (c) h2 (d) .end
33. 33.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) span (c) #main (d) div
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) .note (c) .menu (d) h2
35. 35.True or false: .note is an id selector. (a) False (b) True
36. 36.🎯 Which element does the selector #main style? (a) <h1 class="main"> (b) <h1 id="logo"> (c) <h2 class="big"> (d) <h1 id="main">
37. 37.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="red" id="logo">Hello</h2> (a) #red (b) .red (c) .box (d) #end
39. 39.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="star"> (c) <li id="hero"> (d) <p class="star">
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="red" id="end">Hello</h1> (a) h2 (b) #red (c) #hero (d) #end

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