CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 448 · 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 #main? (a) a class selector (b) an id selector (c) an element selector
2. 2.True or false: .star is a class selector. (a) True (b) False
3. 3.🎯 Which CSS selector matches this element?
   <span class="menu" id="intro">Hello</span> (a) p (b) #main (c) .intro (d) .menu
4. 4.True or false: h1 is a class selector. (a) True (b) False
5. 5.True or false: .menu is an element selector. (a) False (b) True
6. 6.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
7. 7.True or false: .note is an element selector. (a) True (b) False
8. 8.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
9. 9.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
10. 10.True or false: .big is a class selector. (a) True (b) False
11. 11.🎯 Which element does the selector p style? (a) <p class="star"> (b) <h1> (c) <li id="intro"> (d) <h2 class="star">
12. 12.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) .big (c) #main (d) #note
13. 13.🎯 Which sign starts an id selector? (a) # (b) @ (c) . (d) &
14. 14.True or false: #top is an id selector. (a) False (b) True
15. 15.🎯 Which sign starts a class selector? (a) . (b) @ (c) # (d) &
16. 16.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #hero (b) .end (c) #end (d) span
17. 17.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) #main (c) .note (d) p
18. 18.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector p style? (a) <p class="menu"> (b) <h2 class="menu"> (c) <h1> (d) <li id="hero">
20. 20.True or false: li is an element selector. (a) False (b) True
21. 21.🎯 Which element does the selector .note style? (a) <span id="note"> (b) <span class="note"> (c) <p class="red"> (d) <span class="big">
22. 22.🎯 Which element does the selector p style? (a) <li id="intro"> (b) <h1> (c) <h2 class="red"> (d) <p class="red">
23. 23.True or false: #top is a class selector. (a) True (b) False
24. 24.🎯 What kind of selector is body? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="menu"> (c) <span class="note"> (d) <div class="star">
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="star" id="end">Hello</h2> (a) #star (b) #end (c) #hero (d) .menu
27. 27.🎯 Which CSS selector matches this element?
    <p class="box" id="top">Hello</p> (a) #intro (b) #top (c) .star (d) h1
28. 28.True or false: h1 is an element selector. (a) True (b) False
29. 29.True or false: p is a class selector. (a) True (b) False
30. 30.🎯 Which element does the selector li style? (a) <span class="red"> (b) <li class="red"> (c) <p id="logo"> (d) <div>
31. 31.🎯 Which element does the selector div style? (a) <p class="star"> (b) <h1 id="top"> (c) <span> (d) <div class="star">
32. 32.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h1 id="top"> (c) <h2 class="note"> (d) <h1 id="intro">
33. 33.🎯 Which CSS selector matches this element?
    <p class="red" id="logo">Hello</p> (a) #red (b) h1 (c) p (d) .box
34. 34.🎯 Which CSS selector matches this element?
    <li class="note" id="hero">Hello</li> (a) #top (b) .note (c) .hero (d) div
35. 35.🎯 Which element does the selector #end style? (a) <p id="hero"> (b) <p id="end"> (c) <p class="end"> (d) <h1 class="big">
36. 36.🎯 Which CSS selector matches this element?
    <span class="box" id="main">Hello</span> (a) .box (b) #box (c) .star (d) #logo
37. 37.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
38. 38.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .intro (b) .menu (c) #star (d) .star
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) #menu (b) #intro (c) .note (d) li
40. 40.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) #hero (b) span (c) .big (d) #end

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