CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 527 · 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 sign starts an id selector? (a) & (b) # (c) @ (d) .
2. 2.🎯 Which element does the selector #top style? (a) <h1 class="big"> (b) <p id="intro"> (c) <p id="top"> (d) <p class="top">
3. 3.🎯 Which element does the selector .star style? (a) <p id="star"> (b) <p class="star"> (c) <h1 class="note"> (d) <p class="menu">
4. 4.True or false: img is a class selector. (a) True (b) False
5. 5.🎯 Which CSS selector matches this element?
   <li class="menu" id="top">Hello</li> (a) .top (b) li (c) #menu (d) div
6. 6.🎯 Which element does the selector span style? (a) <span class="box"> (b) <h2 id="intro"> (c) <p> (d) <h1 class="box">
7. 7.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
8. 8.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="hero">Hello</span> (a) span (b) #big (c) .red (d) .hero
10. 10.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <h2 id="intro"> (c) <p> (d) <span class="red">
11. 11.🎯 What kind of selector is #end? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
13. 13.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #menu (b) p (c) #main (d) h1
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #main (b) .intro (c) .star (d) #star
15. 15.True or false: #main is a class selector. (a) False (b) True
16. 16.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 2 (d) 5
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="box" id="hero">Hello</h2> (a) .star (b) #top (c) #hero (d) li
18. 18.🎯 Which element does the selector .red style? (a) <h1 class="star"> (b) <p class="box"> (c) <p class="red"> (d) <p id="red">
19. 19.🎯 Can many elements share the same class? (a) No (b) Yes
20. 20.True or false: body is an element selector. (a) True (b) False
21. 21.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
22. 22.🎯 Which CSS selector matches this element?
    <p class="note" id="end">Hello</p> (a) .end (b) p (c) #note (d) #hero
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="star" id="main">Hello</h2> (a) li (b) #logo (c) #main (d) #star
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) .intro (b) .red (c) #main (d) h1
25. 25.True or false: .note is an element selector. (a) True (b) False
26. 26.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) #big (b) .intro (c) p (d) #main
27. 27.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .top (b) .red (c) #top (d) #intro
28. 28.🎯 Which element does the selector h1 style? (a) <h2> (b) <li class="big"> (c) <div id="top"> (d) <h1 class="big">
29. 29.🎯 Which element does the selector .big style? (a) <span id="big"> (b) <p class="box"> (c) <span class="red"> (d) <span class="big">
30. 30.True or false: li is an id selector. (a) True (b) False
31. 31.🎯 What kind of selector is .card? (a) a class selector (b) an element selector (c) an id selector
32. 32.🎯 Which element does the selector h2 style? (a) <h2 class="note"> (b) <span id="logo"> (c) <div class="note"> (d) <li>
33. 33.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which CSS selector matches this element?
    <span class="red" id="main">Hello</span> (a) .box (b) .main (c) #main (d) p
35. 35.True or false: #hero is a class selector. (a) True (b) False
36. 36.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #box (b) h1 (c) #end (d) .box
37. 37.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) div (b) span (c) #big (d) #end
38. 38.True or false: #hero is an id selector. (a) True (b) False
39. 39.🎯 Which CSS selector matches this element?
    <li class="note" id="intro">Hello</li> (a) div (b) #main (c) .note (d) .big
40. 40.True or false: p is a class selector. (a) False (b) True

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