CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 830 · 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.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 What kind of selector is #end? (a) an id selector (b) an element selector (c) a class selector
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="note" id="end">Hello</h2> (a) li (b) .end (c) #hero (d) #end
4. 4.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) any number (d) 2
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="end">Hello</div> (a) #hero (b) span (c) #note (d) #end
6. 6.True or false: .menu is an element selector. (a) True (b) False
7. 7.🎯 Which sign starts an id selector? (a) @ (b) # (c) & (d) .
8. 8.🎯 Can many elements share the same class? (a) No (b) Yes
9. 9.🎯 Which CSS selector matches this element?
   <h2 class="star" id="end">Hello</h2> (a) .star (b) #hero (c) .end (d) .menu
10. 10.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) .logo (b) h2 (c) #end (d) li
11. 11.🎯 Which CSS selector matches this element?
    <p class="note" id="intro">Hello</p> (a) .note (b) #note (c) #main (d) h1
12. 12.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <p class="star"> (c) <p id="box"> (d) <h1 class="menu">
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) #top (b) .hero (c) .menu (d) h2
14. 14.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #menu (b) div (c) li (d) #top
15. 15.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .menu (b) .note (c) .main (d) #menu
16. 16.True or false: .note is a class selector. (a) True (b) False
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) .hero (b) #hero (c) #top (d) .box
18. 18.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector div style? (a) <p class="red"> (b) <h1 id="hero"> (c) <span> (d) <div class="red">
20. 20.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #intro (b) .intro (c) #main (d) #big
21. 21.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="hero">Hello</h2> (a) #top (b) .menu (c) .note (d) #menu
22. 22.🎯 Which element does the selector .star style? (a) <h1 class="star"> (b) <h2 class="note"> (c) <h1 id="star"> (d) <h1 class="menu">
23. 23.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <span class="red"> (c) <div id="end"> (d) <div class="end">
24. 24.🎯 Which element does the selector div style? (a) <h1 id="logo"> (b) <p class="note"> (c) <div class="note"> (d) <span>
25. 25.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
27. 27.🎯 Which element does the selector .note style? (a) <span class="big"> (b) <span class="note"> (c) <span id="note"> (d) <p class="red">
28. 28.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) #end (b) #star (c) .star (d) .logo
29. 29.True or false: #hero is an id selector. (a) False (b) True
30. 30.🎯 Which element does the selector h2 style? (a) <div class="star"> (b) <span id="hero"> (c) <h2 class="star"> (d) <li>
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="logo">Hello</h1> (a) #end (b) .logo (c) .star (d) h1
32. 32.🎯 Which CSS selector matches this element?
    <div class="box" id="top">Hello</div> (a) .star (b) .top (c) span (d) div
33. 33.🎯 Which CSS selector matches this element?
    <p class="big" id="hero">Hello</p> (a) .red (b) .big (c) #top (d) h1
34. 34.🎯 Which element does the selector .menu style? (a) <p class="menu"> (b) <p class="note"> (c) <h1 class="big"> (d) <p id="menu">
35. 35.True or false: .menu is an id selector. (a) True (b) False
36. 36.🎯 Which element does the selector li style? (a) <span class="menu"> (b) <p id="logo"> (c) <div> (d) <li class="menu">
37. 37.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
38. 38.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #note (b) div (c) #end (d) li
40. 40.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector

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