CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 879 · 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 #logo style? (a) <div class="logo"> (b) <span class="note"> (c) <div id="logo"> (d) <div id="end">
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="box" id="intro">Hello</h2> (a) h2 (b) #main (c) li (d) .intro
3. 3.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 Which CSS selector matches this element?
   <p class="red" id="end">Hello</p> (a) .box (b) h1 (c) #red (d) .red
5. 5.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <span> (c) <p class="star"> (d) <div class="star">
6. 6.🎯 Which CSS selector matches this element?
   <li class="red" id="main">Hello</li> (a) div (b) #main (c) #logo (d) .main
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="logo">Hello</p> (a) #end (b) .logo (c) .note (d) #logo
8. 8.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
9. 9.True or false: #end is an element selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) #logo (b) #box (c) span (d) .main
11. 11.🎯 Which element does the selector #hero style? (a) <p class="menu"> (b) <span id="hero"> (c) <span id="top"> (d) <span class="hero">
12. 12.True or false: #logo is an element selector. (a) True (b) False
13. 13.🎯 Which element does the selector #intro style? (a) <span id="main"> (b) <span id="intro"> (c) <span class="intro"> (d) <p class="note">
14. 14.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
15. 15.True or false: body is an element selector. (a) False (b) True
16. 16.True or false: h1 is a class selector. (a) False (b) True
17. 17.🎯 Can many elements share the same class? (a) No (b) Yes
18. 18.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) .logo (b) #end (c) .big (d) div
19. 19.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
20. 20.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) #logo (b) #menu (c) #end (d) .logo
21. 21.🎯 What kind of selector is .note? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="star" id="main">Hello</p> (a) .menu (b) .main (c) p (d) #star
23. 23.True or false: .big is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <li class="red" id="logo">Hello</li> (a) .logo (b) #end (c) li (d) #red
25. 25.True or false: p is a class selector. (a) True (b) False
26. 26.True or false: #end is an id selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .big (b) .red (c) #big (d) h2
28. 28.🎯 Which element does the selector .box style? (a) <span class="box"> (b) <span id="box"> (c) <span class="star"> (d) <p class="menu">
29. 29.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h2 class="menu"> (c) <h1 id="top"> (d) <h1 id="intro">
30. 30.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) #big (c) li (d) div
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="star" id="hero">Hello</h2> (a) .hero (b) #top (c) #star (d) h2
33. 33.🎯 Which element does the selector li style? (a) <p id="intro"> (b) <div> (c) <li class="big"> (d) <span class="big">
34. 34.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="red"> (c) <div id="end"> (d) <h1 class="red">
35. 35.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
36. 36.🎯 Which element does the selector #hero style? (a) <h2 id="top"> (b) <h2 class="hero"> (c) <h2 id="hero"> (d) <li class="big">
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) .red (b) h1 (c) .intro (d) .big
38. 38.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h2 class="menu"> (d) <h1 id="logo">
39. 39.🎯 Which element does the selector #end style? (a) <h2 id="hero"> (b) <li class="red"> (c) <h2 class="end"> (d) <h2 id="end">
40. 40.True or false: #logo is a class selector. (a) True (b) False

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