CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 905 · 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: .menu is an element selector. (a) False (b) True
2. 2.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 Which element does the selector #logo style? (a) <span class="note"> (b) <div id="logo"> (c) <div id="end"> (d) <div class="logo">
4. 4.True or false: #end is an id selector. (a) False (b) True
5. 5.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h1 id="intro"> (d) <h2 class="note">
6. 6.🎯 Which sign starts an id selector? (a) # (b) & (c) @ (d) .
7. 7.🎯 Which CSS selector matches this element?
   <div class="star" id="intro">Hello</div> (a) #star (b) .star (c) .intro (d) span
8. 8.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <h2 class="box"> (c) <li class="star"> (d) <h2 class="red">
9. 9.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
10. 10.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="star"> (c) <h1 class="menu"> (d) <h1 id="star">
11. 11.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <li class="box" id="main">Hello</li> (a) #logo (b) div (c) .main (d) li
13. 13.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #red (b) h1 (c) .logo (d) .red
14. 14.🎯 Which element does the selector li style? (a) <li class="big"> (b) <span class="big"> (c) <p id="top"> (d) <div>
15. 15.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) .star (b) #box (c) .box (d) .top
16. 16.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which element does the selector .note style? (a) <h2 class="red"> (b) <h1 class="big"> (c) <h1 id="note"> (d) <h1 class="note">
19. 19.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
20. 20.True or false: p is a class selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) span (b) .intro (c) #menu (d) #intro
22. 22.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) .note (b) li (c) #hero (d) #end
23. 23.🎯 Which sign starts a class selector? (a) @ (b) # (c) . (d) &
24. 24.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #star (b) #main (c) .intro (d) p
25. 25.True or false: #end is a class selector. (a) True (b) False
26. 26.🎯 Which element does the selector #intro style? (a) <span class="star"> (b) <div class="intro"> (c) <div id="main"> (d) <div id="intro">
27. 27.True or false: #logo is an element selector. (a) False (b) True
28. 28.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <h2 id="end"> (c) <li class="red"> (d) <h2 class="end">
29. 29.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="note"> (c) <li id="end"> (d) <li id="hero">
30. 30.🎯 Which element does the selector #intro style? (a) <li class="menu"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <h2 id="main">
31. 31.🎯 Which element does the selector #logo style? (a) <span class="logo"> (b) <span id="end"> (c) <p class="note"> (d) <span id="logo">
32. 32.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: .note is an id selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) p (b) #intro (c) #box (d) .star
35. 35.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="big" id="hero">Hello</h2> (a) li (b) #big (c) .big (d) .red
38. 38.🎯 Which element does the selector div style? (a) <h1 id="top"> (b) <p class="big"> (c) <span> (d) <div class="big">
39. 39.🎯 Which element does the selector .menu style? (a) <li class="note"> (b) <div class="big"> (c) <li id="menu"> (d) <li class="menu">
40. 40.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) li (b) .main (c) .menu (d) #logo

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