CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 230 · 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) <h1 class="logo"> (b) <h1 id="end"> (c) <h1 id="logo"> (d) <h2 class="box">
2. 2.🎯 Which sign starts a class selector? (a) & (b) # (c) @ (d) .
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="box" id="top">Hello</h2> (a) #intro (b) .star (c) li (d) #top
4. 4.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.True or false: #logo is an id selector. (a) True (b) False
7. 7.True or false: .menu is a class selector. (a) True (b) False
8. 8.True or false: .star is a class selector. (a) False (b) True
9. 9.🎯 Which element does the selector #main style? (a) <li class="star"> (b) <h2 class="main"> (c) <h2 id="main"> (d) <h2 id="logo">
10. 10.🎯 Which element does the selector span style? (a) <h2 id="logo"> (b) <h1 class="star"> (c) <p> (d) <span class="star">
11. 11.True or false: .big is a class selector. (a) True (b) False
12. 12.True or false: .star is an element selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="intro">Hello</h1> (a) .intro (b) .note (c) .menu (d) h2
14. 14.🎯 Which element does the selector div style? (a) <span> (b) <p class="red"> (c) <h1 id="end"> (d) <div class="red">
15. 15.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #hero (b) #box (c) h2 (d) .hero
16. 16.🎯 Which sign starts an id selector? (a) # (b) . (c) @ (d) &
17. 17.🎯 Which element does the selector #intro style? (a) <div class="note"> (b) <li id="main"> (c) <li class="intro"> (d) <li id="intro">
18. 18.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
19. 19.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h2 class="box"> (d) <h1 class="red">
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="red" id="end">Hello</h2> (a) h2 (b) #hero (c) .end (d) li
21. 21.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
23. 23.True or false: .menu is an element selector. (a) True (b) False
24. 24.🎯 Which element does the selector #intro style? (a) <span id="intro"> (b) <span class="intro"> (c) <p class="menu"> (d) <span id="main">
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
26. 26.True or false: .note is a class selector. (a) True (b) False
27. 27.🎯 What kind of selector is body? (a) a class selector (b) an id selector (c) an element selector
28. 28.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) h2 (b) #box (c) li (d) .hero
29. 29.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) .top (b) .note (c) #top (d) h2
31. 31.🎯 Which element does the selector h1 style? (a) <h1 class="red"> (b) <li class="red"> (c) <h2> (d) <div id="end">
32. 32.True or false: #logo is an element selector. (a) False (b) True
33. 33.🎯 Which CSS selector matches this element?
    <p class="star" id="logo">Hello</p> (a) #end (b) h1 (c) .star (d) .logo
34. 34.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) div (b) li (c) #intro (d) .note
35. 35.🎯 Which element does the selector #top style? (a) <p class="box"> (b) <span id="intro"> (c) <span class="top"> (d) <span id="top">
36. 36.True or false: #hero is a class selector. (a) False (b) True
37. 37.True or false: #end is a class selector. (a) True (b) False
38. 38.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <h1 class="box" id="end">Hello</h1> (a) #box (b) .box (c) .end (d) #hero
40. 40.True or false: li is an element selector. (a) True (b) False

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