CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 771 · 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) 1 (b) 5 (c) any number (d) 2
2. 2.🎯 Which element does the selector .big style? (a) <span class="big"> (b) <span class="red"> (c) <p class="box"> (d) <span id="big">
3. 3.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="menu" id="end">Hello</h1> (a) h2 (b) #hero (c) .end (d) #end
6. 6.🎯 Which element does the selector #top style? (a) <div id="top"> (b) <div class="top"> (c) <div id="intro"> (d) <span class="star">
7. 7.🎯 Which element does the selector #main style? (a) <h1 id="main"> (b) <h1 id="logo"> (c) <h2 class="big"> (d) <h1 class="main">
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="red" id="intro">Hello</h2> (a) #main (b) .red (c) #red (d) .intro
9. 9.🎯 Which CSS selector matches this element?
   <span class="red" id="main">Hello</span> (a) #red (b) #logo (c) .main (d) span
10. 10.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .red (b) .intro (c) h1 (d) p
11. 11.🎯 Which sign starts an id selector? (a) @ (b) . (c) # (d) &
12. 12.🎯 Which element does the selector h2 style? (a) <span id="hero"> (b) <li> (c) <h2 class="big"> (d) <div class="big">
13. 13.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
14. 14.True or false: #logo is an element selector. (a) False (b) True
15. 15.🎯 Can many elements share the same class? (a) Yes (b) No
16. 16.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
17. 17.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector .star style? (a) <div class="menu"> (b) <div class="star"> (c) <div id="star"> (d) <span class="note">
19. 19.🎯 Which element does the selector li style? (a) <li class="note"> (b) <span class="note"> (c) <div> (d) <p id="intro">
20. 20.🎯 Which CSS selector matches this element?
    <p class="star" id="intro">Hello</p> (a) #star (b) h1 (c) #main (d) p
21. 21.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) .big (b) #main (c) #intro (d) #note
22. 22.True or false: .menu is an element selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) .star (b) #end (c) h1 (d) .logo
24. 24.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 class="red"> (c) <h2 id="red"> (d) <li class="star">
26. 26.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .big (b) #hero (c) span (d) .note
27. 27.🎯 Which element does the selector div style? (a) <p class="box"> (b) <h1 id="end"> (c) <span> (d) <div class="box">
28. 28.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
29. 29.True or false: h1 is an element selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .end (b) .star (c) li (d) #box
31. 31.🎯 Which element does the selector span style? (a) <p> (b) <span class="box"> (c) <h2 id="intro"> (d) <h1 class="box">
32. 32.🎯 Which element does the selector .big style? (a) <li class="red"> (b) <li id="big"> (c) <div class="box"> (d) <li class="big">
33. 33.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
34. 34.True or false: .big is an id selector. (a) False (b) True
35. 35.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) #note (b) h2 (c) #top (d) .top
37. 37.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) .note (b) #top (c) .menu (d) .hero
38. 38.🎯 Which CSS selector matches this element?
    <p class="big" id="main">Hello</p> (a) h1 (b) .main (c) #main (d) #logo
39. 39.True or false: .note is a class selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="intro">Hello</p> (a) h1 (b) .red (c) #main (d) #red

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