CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 708 · 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.🎯 Can many elements share the same class? (a) No (b) Yes
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="end">Hello</h2> (a) #menu (b) .end (c) #hero (d) h2
3. 3.True or false: #main is an id selector. (a) True (b) False
4. 4.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h2> (c) <li class="red"> (d) <h1 class="red">
5. 5.🎯 Which element does the selector #hero style? (a) <p class="hero"> (b) <p id="hero"> (c) <p id="top"> (d) <h1 class="red">
6. 6.🎯 Which CSS selector matches this element?
   <p class="red" id="top">Hello</p> (a) .red (b) #intro (c) .top (d) .box
7. 7.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
8. 8.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <p class="big"> (d) <span id="top">
9. 9.🎯 Which sign starts an id selector? (a) & (b) # (c) @ (d) .
10. 10.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) h1 (b) #menu (c) .logo (d) #logo
11. 11.🎯 Which element does the selector #logo style? (a) <h1 class="red"> (b) <p id="end"> (c) <p id="logo"> (d) <p class="logo">
12. 12.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
13. 13.🎯 Which element does the selector #top style? (a) <div id="intro"> (b) <span class="big"> (c) <div class="top"> (d) <div id="top">
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) #box (b) #hero (c) .hero (d) h1
15. 15.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #hero (b) #end (c) h1 (d) .end
17. 17.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
18. 18.🎯 Which element does the selector div style? (a) <p class="star"> (b) <div class="star"> (c) <span> (d) <h1 id="top">
19. 19.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) #logo (b) #end (c) .logo (d) #menu
20. 20.True or false: .menu is a class selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) .top (b) .menu (c) #intro (d) .star
22. 22.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="star"> (c) <div class="star"> (d) <span id="logo">
23. 23.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
24. 24.True or false: li is an id selector. (a) False (b) True
25. 25.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li class="big"> (c) <li id="note"> (d) <div class="red">
26. 26.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
27. 27.True or false: .menu is an id selector. (a) False (b) True
28. 28.🎯 Which CSS selector matches this element?
    <li class="red" id="end">Hello</li> (a) .end (b) #end (c) .box (d) #red
29. 29.🎯 Which element does the selector #main style? (a) <div class="main"> (b) <div id="main"> (c) <div id="logo"> (d) <span class="menu">
30. 30.True or false: .star is a class selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #top (b) .hero (c) h1 (d) h2
32. 32.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <p class="menu"> (d) <span class="intro">
33. 33.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #red (b) .main (c) p (d) #logo
34. 34.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) any number (d) 5
35. 35.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) .top (b) .box (c) #red (d) div
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .star (b) #top (c) li (d) .menu
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #logo (b) .note (c) li (d) .big
38. 38.🎯 Which CSS selector matches this element?
    <li class="star" id="intro">Hello</li> (a) .menu (b) #star (c) .intro (d) li
39. 39.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) .box (b) #main (c) h1 (d) #intro
40. 40.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector

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