CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 93 · 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.🎯 What kind of selector is #logo? (a) an element selector (b) a class selector (c) an id selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="box" id="logo">Hello</h2> (a) #end (b) h2 (c) li (d) .star
4. 4.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Can many elements share the same class? (a) Yes (b) No
6. 6.🎯 Which CSS selector matches this element?
   <h2 class="star" id="top">Hello</h2> (a) #intro (b) h2 (c) .menu (d) .top
7. 7.🎯 Which element does the selector p style? (a) <p class="star"> (b) <li id="logo"> (c) <h1> (d) <h2 class="star">
8. 8.🎯 Which CSS selector matches this element?
   <li class="box" id="logo">Hello</li> (a) div (b) .star (c) .box (d) .logo
9. 9.🎯 Which sign starts a class selector? (a) # (b) . (c) @ (d) &
10. 10.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) li (b) .red (c) #hero (d) #big
11. 11.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) h1 (b) h2 (c) .end (d) #hero
12. 12.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
13. 13.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
14. 14.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) .red (b) #big (c) div (d) .logo
15. 15.🎯 Which element does the selector .box style? (a) <h1 id="box"> (b) <h1 class="box"> (c) <h2 class="menu"> (d) <h1 class="star">
16. 16.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) .end (b) h1 (c) .box (d) #end
17. 17.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="red"> (c) <span class="big"> (d) <span id="big">
18. 18.🎯 Which element does the selector .note style? (a) <h1 class="big"> (b) <h1 id="note"> (c) <h2 class="red"> (d) <h1 class="note">
19. 19.🎯 Which element does the selector #top style? (a) <span id="top"> (b) <p class="menu"> (c) <span class="top"> (d) <span id="intro">
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) h2 (c) .note (d) .menu
21. 21.🎯 What kind of selector is .big? (a) a class selector (b) an id selector (c) an element selector
22. 22.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <li class="note"> (c) <h2 id="star"> (d) <h2 class="star">
23. 23.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="main"> (c) <li class="menu"> (d) <h2 id="intro">
25. 25.🎯 Which CSS selector matches this element?
    <h2 class="big" id="top">Hello</h2> (a) #intro (b) .top (c) h2 (d) .red
26. 26.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
27. 27.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <div id="main"> (c) <h2> (d) <h1 class="red">
28. 28.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) 1 (d) any number
29. 29.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) li (b) .box (c) #red (d) h2
30. 30.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) .note (b) .menu (c) div (d) #menu
32. 32.🎯 Which element does the selector #top style? (a) <li class="top"> (b) <div class="star"> (c) <li id="top"> (d) <li id="intro">
33. 33.🎯 Which element does the selector .red style? (a) <li id="red"> (b) <div class="star"> (c) <li class="box"> (d) <li class="red">
34. 34.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) #red (b) #main (c) #logo (d) .main
35. 35.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <h2 id="logo"> (d) <li class="note">
36. 36.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
37. 37.True or false: body is a class selector. (a) False (b) True
38. 38.🎯 What kind of selector is #top? (a) an element selector (b) an id selector (c) a class selector
39. 39.True or false: .big is an element selector. (a) False (b) True
40. 40.True or false: #top is an id selector. (a) True (b) False

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