CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 405 · 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 li style? (a) <li class="red"> (b) <div> (c) <p id="top"> (d) <span class="red">
2. 2.🎯 Which element does the selector #main style? (a) <h2 id="main"> (b) <h2 id="logo"> (c) <li class="red"> (d) <h2 class="main">
3. 3.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
4. 4.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
5. 5.True or false: #end is an id selector. (a) False (b) True
6. 6.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
7. 7.🎯 Which element does the selector span style? (a) <p> (b) <h1 class="note"> (c) <h2 id="top"> (d) <span class="note">
8. 8.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
9. 9.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) #top (b) .star (c) #hero (d) #box
11. 11.True or false: .big is a class selector. (a) False (b) True
12. 12.🎯 Which CSS selector matches this element?
    <li class="note" id="logo">Hello</li> (a) #logo (b) .big (c) .logo (d) #note
13. 13.True or false: #main is a class selector. (a) True (b) False
14. 14.True or false: #top is an element selector. (a) True (b) False
15. 15.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #big (b) h2 (c) .logo (d) li
16. 16.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="box"> (d) <h2 id="logo">
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="note" id="main">Hello</h2> (a) #main (b) .big (c) .main (d) #note
18. 18.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <p class="big"> (c) <div class="big"> (d) <span>
19. 19.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) #intro (b) .menu (c) #star (d) span
20. 20.🎯 Which element does the selector #hero style? (a) <h1 id="top"> (b) <h1 class="hero"> (c) <h2 class="box"> (d) <h1 id="hero">
21. 21.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
22. 22.True or false: .card is a class selector. (a) True (b) False
23. 23.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
24. 24.🎯 Which element does the selector .box style? (a) <p class="menu"> (b) <span class="star"> (c) <span id="box"> (d) <span class="box">
25. 25.🎯 Which element does the selector .big style? (a) <h1 class="red"> (b) <h2 class="box"> (c) <h1 id="big"> (d) <h1 class="big">
26. 26.True or false: .note is a class selector. (a) False (b) True
27. 27.True or false: #logo is a class selector. (a) True (b) False
28. 28.True or false: p is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector #top style? (a) <li class="red"> (b) <h2 class="top"> (c) <h2 id="intro"> (d) <h2 id="top">
30. 30.True or false: #hero is an element selector. (a) True (b) False
31. 31.🎯 Which CSS selector matches this element?
    <h2 class="red" id="intro">Hello</h2> (a) h2 (b) .box (c) .intro (d) li
32. 32.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) div (b) .end (c) #hero (d) li
33. 33.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) h1 (b) .big (c) #end (d) .note
34. 34.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) #top (b) #box (c) div (d) .star
35. 35.🎯 What kind of selector is .card? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which sign starts a class selector? (a) # (b) & (c) @ (d) .
37. 37.🎯 Which element does the selector p style? (a) <h1> (b) <li id="top"> (c) <p class="star"> (d) <h2 class="star">
38. 38.True or false: p is a class selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <li class="menu" id="logo">Hello</li> (a) div (b) .menu (c) #end (d) .note
40. 40.🎯 Which element does the selector p style? (a) <h1> (b) <p class="note"> (c) <h2 class="note"> (d) <li id="logo">

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