CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 687 · 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 li? (a) a class selector (b) an element selector (c) an id selector
3. 3.True or false: #end is a class selector. (a) False (b) True
4. 4.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
5. 5.🎯 Which element does the selector .box style? (a) <div class="menu"> (b) <li class="star"> (c) <li id="box"> (d) <li class="box">
6. 6.🎯 Which CSS selector matches this element?
   <div class="big" id="main">Hello</div> (a) #big (b) .big (c) #logo (d) .red
7. 7.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h2 class="menu"> (c) <h1 id="hero"> (d) <h1 class="hero">
8. 8.True or false: p is an element selector. (a) True (b) False
9. 9.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <div id="main"> (c) <li class="big"> (d) <h2>
10. 10.True or false: .star is an element selector. (a) True (b) False
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="note" id="intro">Hello</h2> (a) #note (b) h2 (c) .intro (d) li
12. 12.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) h1 (b) .star (c) #box (d) #hero
13. 13.🎯 What kind of selector is #main? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="logo">Hello</span> (a) p (b) #note (c) .big (d) #logo
15. 15.True or false: .star is an id selector. (a) False (b) True
16. 16.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
17. 17.True or false: h1 is an id selector. (a) True (b) False
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) .logo (b) h2 (c) h1 (d) .big
19. 19.🎯 Which CSS selector matches this element?
    <div class="red" id="main">Hello</div> (a) span (b) div (c) .main (d) #red
20. 20.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 Can many elements share the same class? (a) No (b) Yes
22. 22.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) h1 (b) #box (c) p (d) .main
23. 23.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
24. 24.🎯 Which element does the selector #top style? (a) <div class="note"> (b) <li class="top"> (c) <li id="top"> (d) <li id="intro">
25. 25.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) .red (b) #end (c) h1 (d) .big
26. 26.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <li class="star"> (c) <h2 class="red"> (d) <h2 id="red">
27. 27.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #intro (b) .top (c) h2 (d) #menu
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) div (b) .logo (c) li (d) #big
29. 29.🎯 Which CSS selector matches this element?
    <li class="star" id="logo">Hello</li> (a) #end (b) div (c) .menu (d) li
30. 30.🎯 Which element does the selector .star style? (a) <h2 class="menu"> (b) <h2 id="star"> (c) <li class="note"> (d) <h2 class="star">
31. 31.🎯 Which element does the selector .star style? (a) <p class="menu"> (b) <p class="star"> (c) <p id="star"> (d) <h1 class="note">
32. 32.🎯 Which element does the selector h1 style? (a) <div id="hero"> (b) <h1 class="red"> (c) <li class="red"> (d) <h2>
33. 33.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #big (b) #end (c) h1 (d) .logo
34. 34.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="end">Hello</h2> (a) #menu (b) .end (c) #end (d) li
36. 36.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
37. 37.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #intro (b) #menu (c) h1 (d) #main
38. 38.True or false: #hero is a class selector. (a) True (b) False
39. 39.True or false: .note is an element selector. (a) False (b) True
40. 40.🎯 Which CSS selector matches this element?
    <p class="note" id="hero">Hello</p> (a) .note (b) h1 (c) .big (d) .hero

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