CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 816 · 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 element does the selector .box style? (a) <p class="star"> (b) <h1 class="menu"> (c) <p class="box"> (d) <p id="box">
2. 2.🎯 Which CSS selector matches this element?
   <div class="note" id="hero">Hello</div> (a) span (b) .hero (c) #hero (d) .big
3. 3.True or false: #logo is a class selector. (a) False (b) True
4. 4.🎯 Which CSS selector matches this element?
   <div class="menu" id="end">Hello</div> (a) .end (b) #menu (c) #end (d) .note
5. 5.🎯 Which CSS selector matches this element?
   <h1 class="big" id="logo">Hello</h1> (a) .logo (b) #end (c) h2 (d) #logo
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which CSS selector matches this element?
   <p class="star" id="main">Hello</p> (a) h1 (b) .main (c) p (d) #logo
8. 8.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which CSS selector matches this element?
   <p class="big" id="end">Hello</p> (a) #big (b) #hero (c) .big (d) h1
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) h2 (b) .main (c) .box (d) .star
11. 11.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
12. 12.🎯 Which sign starts a class selector? (a) # (b) & (c) . (d) @
13. 13.🎯 Which element does the selector #hero style? (a) <h2 class="hero"> (b) <h2 id="top"> (c) <li class="note"> (d) <h2 id="hero">
14. 14.🎯 Which CSS selector matches this element?
    <li class="star" id="end">Hello</li> (a) li (b) div (c) #star (d) .end
15. 15.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) .note (b) #intro (c) #top (d) p
16. 16.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #big (b) div (c) li (d) .red
17. 17.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
19. 19.🎯 Which element does the selector p style? (a) <p class="red"> (b) <li id="end"> (c) <h1> (d) <h2 class="red">
20. 20.🎯 Which CSS selector matches this element?
    <li class="red" id="top">Hello</li> (a) #intro (b) div (c) #red (d) .red
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) h2 (b) .intro (c) h1 (d) .note
22. 22.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
23. 23.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which element does the selector .box style? (a) <div class="box"> (b) <div class="star"> (c) <div id="box"> (d) <span class="menu">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="big" id="main">Hello</h2> (a) #logo (b) #big (c) #main (d) li
27. 27.True or false: #main is an element selector. (a) True (b) False
28. 28.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
29. 29.True or false: img is an element selector. (a) True (b) False
30. 30.🎯 Which element does the selector .red style? (a) <p class="box"> (b) <p id="red"> (c) <h1 class="star"> (d) <p class="red">
31. 31.🎯 Which element does the selector #logo style? (a) <span id="logo"> (b) <span id="end"> (c) <span class="logo"> (d) <p class="big">
32. 32.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) div (b) .big (c) #note (d) li
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) .red (b) #big (c) .main (d) #main
34. 34.🎯 Which element does the selector h1 style? (a) <div id="top"> (b) <li class="big"> (c) <h2> (d) <h1 class="big">
35. 35.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) li (b) .big (c) #note (d) #intro
36. 36.True or false: #hero is a class selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) .top (c) p (d) .box
38. 38.True or false: .big is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector #intro style? (a) <p class="note"> (b) <span id="main"> (c) <span id="intro"> (d) <span class="intro">
40. 40.🎯 Which CSS selector matches this element?
    <p class="red" id="top">Hello</p> (a) h1 (b) .top (c) #top (d) #red

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