CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 793 · 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 img? (a) a class selector (b) an id selector (c) an element selector
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="box" id="logo">Hello</h1> (a) h2 (b) #box (c) .star (d) h1
3. 3.🎯 Which element does the selector p style? (a) <h2 class="box"> (b) <h1> (c) <li id="top"> (d) <p class="box">
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) 5 (d) any number
5. 5.True or false: #end is an id selector. (a) False (b) True
6. 6.True or false: p is a class selector. (a) True (b) False
7. 7.🎯 Which CSS selector matches this element?
   <h1 class="note" id="intro">Hello</h1> (a) .big (b) #note (c) #intro (d) h2
8. 8.🎯 Which element does the selector div style? (a) <div class="red"> (b) <p class="red"> (c) <h1 id="end"> (d) <span>
9. 9.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
10. 10.🎯 Which CSS selector matches this element?
    <p class="box" id="end">Hello</p> (a) #end (b) .star (c) h1 (d) .end
11. 11.True or false: .menu is a class selector. (a) True (b) False
12. 12.True or false: #top is a class selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) li (b) .big (c) h2 (d) .top
14. 14.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
15. 15.🎯 Can many elements share the same class? (a) No (b) Yes
16. 16.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #main (b) h1 (c) #menu (d) p
17. 17.True or false: #top is an id selector. (a) True (b) False
18. 18.True or false: .note is an element selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <span class="note" id="hero">Hello</span> (a) .big (b) .note (c) p (d) .hero
20. 20.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <span class="box"> (c) <div class="main"> (d) <div id="main">
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) #main (b) .main (c) #star (d) h2
22. 22.🎯 What kind of selector is #main? (a) a class selector (b) an id selector (c) an element selector
23. 23.🎯 Which element does the selector #end style? (a) <h2 id="end"> (b) <h2 class="end"> (c) <li class="menu"> (d) <h2 id="hero">
24. 24.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
25. 25.True or false: li is an element selector. (a) False (b) True
26. 26.🎯 Which element does the selector #intro style? (a) <li id="intro"> (b) <div class="note"> (c) <li class="intro"> (d) <li id="main">
27. 27.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
28. 28.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #hero (b) #note (c) .end (d) #end
29. 29.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) #end (b) #note (c) .big (d) div
30. 30.True or false: .card is a class selector. (a) False (b) True
31. 31.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <li> (d) <span id="top">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) h2 (c) .top (d) #menu
33. 33.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) .star (b) #box (c) #logo (d) #main
34. 34.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <span class="box"> (c) <h2 id="main"> (d) <p>
35. 35.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="note" id="logo">Hello</h2> (a) #end (b) li (c) .logo (d) h2
37. 37.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) h1 (b) .intro (c) .menu (d) #menu
38. 38.🎯 What kind of selector is body? (a) a class selector (b) an element selector (c) an id selector
39. 39.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) #end (b) span (c) .box (d) #red
40. 40.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #main (b) #note (c) #intro (d) p

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