CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 803 · 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.True or false: #main is an id selector. (a) True (b) False
2. 2.🎯 Which CSS selector matches this element?
   <div class="box" id="intro">Hello</div> (a) .star (b) span (c) #main (d) .box
3. 3.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
4. 4.True or false: #top is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector .star style? (a) <span class="menu"> (b) <span id="star"> (c) <p class="note"> (d) <span class="star">
6. 6.🎯 Which element does the selector #intro style? (a) <p id="main"> (b) <p class="intro"> (c) <h1 class="star"> (d) <p id="intro">
7. 7.🎯 Which sign starts an id selector? (a) . (b) & (c) @ (d) #
8. 8.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
9. 9.🎯 Which element does the selector span style? (a) <h2 id="intro"> (b) <h1 class="note"> (c) <span class="note"> (d) <p>
10. 10.🎯 Which CSS selector matches this element?
    <div class="red" id="intro">Hello</div> (a) #red (b) .box (c) .red (d) #main
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) li (b) .note (c) .menu (d) #menu
12. 12.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
13. 13.🎯 What kind of selector is .note? (a) a class selector (b) an element selector (c) an id selector
14. 14.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
15. 15.🎯 Which element does the selector h1 style? (a) <li class="box"> (b) <h2> (c) <h1 class="box"> (d) <div id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .red (b) #red (c) .main (d) div
17. 17.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) #end (b) .end (c) #hero (d) #big
18. 18.🎯 Can many elements share the same class? (a) Yes (b) No
19. 19.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .end (b) #note (c) span (d) div
20. 20.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h1 id="big"> (c) <h1 class="red"> (d) <h2 class="box">
21. 21.🎯 Which element does the selector .big style? (a) <p id="big"> (b) <p class="big"> (c) <p class="red"> (d) <h1 class="box">
22. 22.🎯 What kind of selector is #top? (a) an id selector (b) an element selector (c) a class selector
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="top">Hello</h1> (a) .top (b) h2 (c) h1 (d) .red
24. 24.🎯 Which element does the selector li style? (a) <span class="note"> (b) <p id="top"> (c) <div> (d) <li class="note">
25. 25.True or false: #logo is an id selector. (a) False (b) True
26. 26.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector span style? (a) <span class="box"> (b) <p> (c) <h2 id="intro"> (d) <h1 class="box">
28. 28.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
29. 29.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
30. 30.🎯 Which element does the selector .red style? (a) <h1 class="red"> (b) <h1 class="box"> (c) <h2 class="star"> (d) <h1 id="red">
31. 31.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) #big (b) .hero (c) p (d) span
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #intro (b) .menu (c) h1 (d) #star
33. 33.🎯 Which element does the selector span style? (a) <h2 id="top"> (b) <h1 class="star"> (c) <p> (d) <span class="star">
34. 34.True or false: #end is an id selector. (a) False (b) True
35. 35.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) .menu (b) #menu (c) #end (d) .note
36. 36.🎯 Which CSS selector matches this element?
    <h1 class="star" id="intro">Hello</h1> (a) .star (b) .intro (c) #star (d) #main
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) h1 (b) #box (c) h2 (d) #main
38. 38.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) li (b) .intro (c) .note (d) #menu
39. 39.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="top"> (c) <span id="hero"> (d) <p class="note">
40. 40.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="intro"> (c) <h1 class="note"> (d) <h2>

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