CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 366 · 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 CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) #note (b) #main (c) .intro (d) div
2. 2.True or false: h1 is an element selector. (a) False (b) True
3. 3.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
4. 4.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
5. 5.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
6. 6.True or false: li is an id selector. (a) False (b) True
7. 7.True or false: img is an element selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <h2 class="red" id="top">Hello</h2> (a) h2 (b) .top (c) .box (d) li
9. 9.🎯 Which CSS selector matches this element?
   <span class="big" id="intro">Hello</span> (a) .intro (b) .red (c) span (d) #main
10. 10.True or false: .menu is an id selector. (a) True (b) False
11. 11.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
12. 12.🎯 Which element does the selector span style? (a) <h1 class="red"> (b) <p> (c) <span class="red"> (d) <h2 id="top">
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) #note (b) #main (c) .note (d) .big
14. 14.True or false: #hero is a class selector. (a) False (b) True
15. 15.🎯 Which element does the selector p style? (a) <li id="top"> (b) <p class="box"> (c) <h2 class="box"> (d) <h1>
16. 16.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
17. 17.🎯 Can many elements share the same class? (a) Yes (b) No
18. 18.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) span (c) div (d) #box
19. 19.True or false: .star is an id selector. (a) True (b) False
20. 20.🎯 Which sign starts a class selector? (a) . (b) @ (c) & (d) #
21. 21.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="big"> (d) <li class="big">
22. 22.🎯 Which CSS selector matches this element?
    <span class="red" id="logo">Hello</span> (a) .red (b) .box (c) .logo (d) #end
23. 23.🎯 What kind of selector is .big? (a) a class selector (b) an element selector (c) an id selector
24. 24.True or false: .note is an id selector. (a) False (b) True
25. 25.🎯 Which element does the selector span style? (a) <p> (b) <span class="menu"> (c) <h2 id="logo"> (d) <h1 class="menu">
26. 26.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) #main (b) .intro (c) .red (d) div
27. 27.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
28. 28.🎯 Which CSS selector matches this element?
    <li class="big" id="main">Hello</li> (a) .main (b) #main (c) .red (d) #big
29. 29.True or false: #end is an element selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <span class="big" id="end">Hello</span> (a) .end (b) #end (c) #hero (d) p
31. 31.True or false: #end is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #intro (b) #menu (c) .top (d) h1
33. 33.🎯 Which element does the selector div style? (a) <h1 id="hero"> (b) <p class="box"> (c) <span> (d) <div class="box">
34. 34.🎯 Which element does the selector #logo style? (a) <div id="end"> (b) <div class="logo"> (c) <div id="logo"> (d) <span class="menu">
35. 35.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="box" id="top">Hello</h2> (a) .star (b) #intro (c) #top (d) #box
37. 37.🎯 Which element does the selector p style? (a) <li id="top"> (b) <h2 class="note"> (c) <p class="note"> (d) <h1>
38. 38.🎯 Which sign starts an id selector? (a) @ (b) & (c) . (d) #
39. 39.🎯 Which CSS selector matches this element?
    <p class="note" id="logo">Hello</p> (a) .note (b) h1 (c) #note (d) .logo
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) .note (c) h2 (d) .menu

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