CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 249 · 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 .box style? (a) <li class="box"> (b) <li id="box"> (c) <div class="menu"> (d) <li class="star">
2. 2.🎯 Which sign starts an id selector? (a) . (b) # (c) & (d) @
3. 3.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which element does the selector #main style? (a) <h1 class="red"> (b) <p class="main"> (c) <p id="main"> (d) <p id="logo">
5. 5.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
6. 6.🎯 Which element does the selector #main style? (a) <span class="box"> (b) <div class="main"> (c) <div id="main"> (d) <div id="logo">
7. 7.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
8. 8.True or false: .menu is a class selector. (a) True (b) False
9. 9.🎯 Which sign starts a class selector? (a) & (b) # (c) . (d) @
10. 10.🎯 Which element does the selector li style? (a) <p id="end"> (b) <li class="red"> (c) <div> (d) <span class="red">
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) #main (b) h2 (c) .box (d) .star
12. 12.True or false: #top is an id selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #box (b) .star (c) #intro (d) h1
14. 14.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
15. 15.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h2 class="note">
16. 16.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) p (b) .big (c) #note (d) span
18. 18.🎯 Which CSS selector matches this element?
    <h2 class="red" id="main">Hello</h2> (a) #red (b) #main (c) .box (d) #logo
19. 19.🎯 Which element does the selector #top style? (a) <p class="big"> (b) <span id="top"> (c) <span class="top"> (d) <span id="intro">
20. 20.True or false: .note is a class selector. (a) True (b) False
21. 21.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
22. 22.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
23. 23.🎯 Which element does the selector #intro style? (a) <div class="star"> (b) <li id="intro"> (c) <li id="main"> (d) <li class="intro">
24. 24.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) #big (b) .top (c) .big (d) h1
25. 25.🎯 What kind of selector is h1? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <div class="star" id="main">Hello</div> (a) .main (b) .menu (c) #main (d) #star
27. 27.🎯 Which CSS selector matches this element?
    <div class="big" id="end">Hello</div> (a) #big (b) .red (c) div (d) span
28. 28.True or false: .note is an element selector. (a) True (b) False
29. 29.True or false: #main is an id selector. (a) True (b) False
30. 30.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) #main (b) .intro (c) .big (d) #intro
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) #note (b) .note (c) h2 (d) .hero
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #hero (b) p (c) span (d) .star
33. 33.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
34. 34.True or false: #main is a class selector. (a) False (b) True
35. 35.True or false: img is a class selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) .intro (b) li (c) .menu (d) div
37. 37.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="hero"> (c) <h1 class="star"> (d) <p id="top">
38. 38.🎯 Which CSS selector matches this element?
    <li class="big" id="top">Hello</li> (a) #big (b) #intro (c) li (d) .red
39. 39.True or false: .big is an element selector. (a) False (b) True
40. 40.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <span class="red"> (c) <p class="box"> (d) <span class="big">

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