CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 118 · 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.True or false: h1 is an id selector. (a) False (b) True
2. 2.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
3. 3.True or false: #logo is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <li class="star" id="end">Hello</li> (a) div (b) #star (c) .end (d) #end
5. 5.🎯 Which element does the selector div style? (a) <div class="big"> (b) <p class="big"> (c) <h1 id="end"> (d) <span>
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="hero">Hello</h2> (a) #top (b) .note (c) h2 (d) #menu
7. 7.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <div id="intro"> (d) <h1 class="big">
8. 8.🎯 Which element does the selector #top style? (a) <li id="intro"> (b) <div class="note"> (c) <li id="top"> (d) <li class="top">
9. 9.🎯 Which CSS selector matches this element?
   <div class="big" id="logo">Hello</div> (a) div (b) .red (c) #big (d) .logo
10. 10.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) span (b) .menu (c) #star (d) p
11. 11.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <li> (c) <div class="star"> (d) <h2 class="star">
12. 12.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
13. 13.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
14. 14.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <li class="star"> (d) <h2 id="intro">
15. 15.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 class="note"> (c) <h1 id="note"> (d) <h2 class="red">
17. 17.True or false: #logo is an id selector. (a) False (b) True
18. 18.🎯 What kind of selector is img? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .hero (b) .big (c) .red (d) #big
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .big (b) #logo (c) h2 (d) .note
21. 21.True or false: .star is an element selector. (a) True (b) False
22. 22.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) #intro (c) .top (d) h1
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="note" id="end">Hello</h2> (a) #note (b) h2 (c) li (d) #hero
26. 26.🎯 Can many elements share the same class? (a) No (b) Yes
27. 27.🎯 Which element does the selector #main style? (a) <div class="red"> (b) <li id="main"> (c) <li id="logo"> (d) <li class="main">
28. 28.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <span class="big"> (c) <span class="red"> (d) <p class="box">
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) li (b) .red (c) .box (d) .top
30. 30.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) p (b) #main (c) #note (d) h1
31. 31.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <span class="note"> (c) <div id="star"> (d) <div class="star">
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .intro (b) .big (c) h2 (d) #main
33. 33.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) 2 (d) any number
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) .top (b) h2 (c) h1 (d) #intro
35. 35.🎯 Which element does the selector .big style? (a) <div class="red"> (b) <span class="box"> (c) <div id="big"> (d) <div class="big">
36. 36.🎯 Which element does the selector h2 style? (a) <li> (b) <h2 class="big"> (c) <div class="big"> (d) <span id="end">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="red" id="hero">Hello</h2> (a) #top (b) .red (c) #red (d) .hero
38. 38.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) #note (b) p (c) #end (d) .end
39. 39.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 class="logo"> (c) <h2 id="end"> (d) <h2 id="logo">
40. 40.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="star"> (c) <li class="note"> (d) <h2 class="menu">

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