CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 814 · 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) an id selector (b) an element selector (c) a class selector
2. 2.🎯 Which element does the selector .star style? (a) <h2 id="star"> (b) <h2 class="menu"> (c) <h2 class="star"> (d) <li class="note">
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="note" id="intro">Hello</h2> (a) #intro (b) li (c) #note (d) .intro
4. 4.🎯 Can many elements share the same class? (a) No (b) Yes
5. 5.🎯 Which CSS selector matches this element?
   <div class="red" id="intro">Hello</div> (a) #intro (b) #red (c) span (d) .box
6. 6.True or false: #top is an element selector. (a) True (b) False
7. 7.True or false: .card is an id selector. (a) False (b) True
8. 8.🎯 Which element does the selector #intro style? (a) <li class="intro"> (b) <div class="menu"> (c) <li id="main"> (d) <li id="intro">
9. 9.🎯 Which CSS selector matches this element?
   <div class="box" id="end">Hello</div> (a) .box (b) #box (c) #hero (d) span
10. 10.🎯 Which sign starts a class selector? (a) @ (b) & (c) . (d) #
11. 11.🎯 What kind of selector is .star? (a) an element selector (b) a class selector (c) an id selector
12. 12.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 id="intro"> (c) <li class="box"> (d) <h2 class="intro">
13. 13.🎯 Which sign starts an id selector? (a) & (b) @ (c) . (d) #
14. 14.🎯 Which element does the selector .note style? (a) <h1 id="note"> (b) <h1 class="note"> (c) <h2 class="red"> (d) <h1 class="big">
15. 15.True or false: #hero is a class selector. (a) True (b) False
16. 16.🎯 Which element does the selector p style? (a) <h1> (b) <p class="menu"> (c) <h2 class="menu"> (d) <li id="top">
17. 17.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) p (b) .main (c) span (d) #logo
18. 18.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
19. 19.True or false: img is an id selector. (a) True (b) False
20. 20.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
21. 21.True or false: p is an id selector. (a) True (b) False
22. 22.🎯 Which element does the selector h2 style? (a) <div class="red"> (b) <span id="main"> (c) <h2 class="red"> (d) <li>
23. 23.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <div class="star"> (c) <span id="intro"> (d) <li>
24. 24.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <li class="box">
25. 25.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="note" id="logo">Hello</h1> (a) #note (b) .logo (c) .note (d) #end
27. 27.True or false: .big is an element selector. (a) True (b) False
28. 28.🎯 Which element does the selector #logo style? (a) <span class="menu"> (b) <div id="end"> (c) <div id="logo"> (d) <div class="logo">
29. 29.🎯 Which element does the selector span style? (a) <h1 class="note"> (b) <h2 id="intro"> (c) <span class="note"> (d) <p>
30. 30.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which element does the selector #top style? (a) <h1 class="top"> (b) <h2 class="box"> (c) <h1 id="top"> (d) <h1 id="intro">
32. 32.True or false: .card is an element selector. (a) True (b) False
33. 33.🎯 Which CSS selector matches this element?
    <li class="note" id="main">Hello</li> (a) #note (b) .main (c) li (d) div
34. 34.🎯 Which CSS selector matches this element?
    <li class="box" id="logo">Hello</li> (a) #end (b) #logo (c) #box (d) .star
35. 35.🎯 Which element does the selector .menu style? (a) <li class="big"> (b) <h2 class="note"> (c) <h2 id="menu"> (d) <h2 class="menu">
36. 36.🎯 Which element does the selector div style? (a) <div class="note"> (b) <span> (c) <h1 id="intro"> (d) <p class="note">
37. 37.True or false: .menu is an element selector. (a) True (b) False
38. 38.🎯 What kind of selector is h1? (a) an element selector (b) an id selector (c) a class selector
39. 39.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .hero (b) .red (c) #red (d) div
40. 40.🎯 Which CSS selector matches this element?
    <span class="menu" id="end">Hello</span> (a) span (b) #hero (c) p (d) .end

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