CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 183 · 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.🎯 How many elements on a page should have the same id? (a) any number (b) 5 (c) 1 (d) 2
2. 2.🎯 Which CSS selector matches this element?
   <p class="box" id="main">Hello</p> (a) p (b) #box (c) #logo (d) h1
3. 3.🎯 Which element does the selector span style? (a) <p> (b) <span class="note"> (c) <h2 id="hero"> (d) <h1 class="note">
4. 4.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which element does the selector h1 style? (a) <li class="big"> (b) <h2> (c) <h1 class="big"> (d) <div id="top">
6. 6.🎯 Which CSS selector matches this element?
   <span class="note" id="intro">Hello</span> (a) .note (b) #note (c) p (d) #main
7. 7.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <li> (c) <span id="logo"> (d) <h2 class="star">
8. 8.🎯 Which CSS selector matches this element?
   <div class="big" id="top">Hello</div> (a) #intro (b) span (c) .top (d) .big
9. 9.🎯 Which CSS selector matches this element?
   <span class="star" id="top">Hello</span> (a) p (b) #star (c) #top (d) #intro
10. 10.🎯 Which sign starts a class selector? (a) & (b) . (c) @ (d) #
11. 11.True or false: body is an element selector. (a) True (b) False
12. 12.🎯 Which CSS selector matches this element?
    <div class="note" id="intro">Hello</div> (a) span (b) div (c) #note (d) #main
13. 13.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <span id="intro"> (c) <span class="top"> (d) <p class="red">
14. 14.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #hero (b) .box (c) .end (d) #box
16. 16.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
18. 18.True or false: .menu is a class selector. (a) True (b) False
19. 19.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) span (b) #hero (c) div (d) .end
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) #hero (b) .menu (c) .star (d) li
21. 21.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div class="big"> (c) <div class="red"> (d) <div id="big">
22. 22.🎯 Can many elements share the same class? (a) No (b) Yes
23. 23.🎯 Which element does the selector #top style? (a) <h1 id="intro"> (b) <h1 class="top"> (c) <h1 id="top"> (d) <h2 class="big">
24. 24.🎯 Which element does the selector #logo style? (a) <li id="logo"> (b) <li id="end"> (c) <div class="menu"> (d) <li class="logo">
25. 25.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <p class="big"> (c) <span> (d) <div class="big">
26. 26.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) #logo (b) li (c) .star (d) #main
28. 28.🎯 Which element does the selector h1 style? (a) <h1 class="star"> (b) <div id="end"> (c) <li class="star"> (d) <h2>
29. 29.🎯 Which element does the selector #main style? (a) <li class="star"> (b) <h2 class="main"> (c) <h2 id="logo"> (d) <h2 id="main">
30. 30.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) #intro (b) .star (c) .menu (d) .top
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) #note (b) .big (c) .main (d) #main
32. 32.True or false: #hero is a class selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <li class="box" id="hero">Hello</li> (a) .hero (b) #top (c) li (d) #box
34. 34.🎯 What kind of selector is li? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) span (b) .intro (c) .star (d) #box
36. 36.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 id="red"> (c) <h1 class="red"> (d) <h1 class="box">
37. 37.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
38. 38.True or false: #end is an id selector. (a) False (b) True
39. 39.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <p> (c) <span class="menu"> (d) <h1 class="menu">
40. 40.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <div class="big"> (d) <h2 class="big">

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