CSS Worksheet: Selectors Class and Id

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

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