CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 399 · 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.🎯 Can many elements share the same class? (a) Yes (b) No
2. 2.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
3. 3.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
4. 4.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
5. 5.🎯 Which CSS selector matches this element?
   <div class="note" id="intro">Hello</div> (a) #main (b) .note (c) .big (d) .intro
6. 6.🎯 Which CSS selector matches this element?
   <p class="note" id="end">Hello</p> (a) .end (b) .note (c) .big (d) #hero
7. 7.True or false: h1 is an id selector. (a) True (b) False
8. 8.🎯 Which element does the selector .red style? (a) <h2 class="box"> (b) <h2 id="red"> (c) <li class="star"> (d) <h2 class="red">
9. 9.True or false: #hero is an element selector. (a) False (b) True
10. 10.🎯 Which CSS selector matches this element?
    <span class="box" id="logo">Hello</span> (a) p (b) #box (c) #logo (d) .star
11. 11.🎯 What kind of selector is #logo? (a) a class selector (b) an id selector (c) an element selector
12. 12.True or false: h1 is an element selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) #menu (b) .menu (c) #end (d) .note
14. 14.True or false: li is an element selector. (a) False (b) True
15. 15.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
16. 16.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #main (b) .intro (c) #note (d) span
17. 17.🎯 Which element does the selector h2 style? (a) <h2 class="red"> (b) <span id="logo"> (c) <div class="red"> (d) <li>
18. 18.True or false: img is an element selector. (a) False (b) True
19. 19.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) #top (b) h1 (c) .red (d) .hero
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #red (b) .red (c) #top (d) h2
21. 21.🎯 Which element does the selector h2 style? (a) <div class="menu"> (b) <span id="top"> (c) <h2 class="menu"> (d) <li>
22. 22.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) #main (b) #intro (c) .intro (d) #menu
23. 23.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #box (b) #end (c) h2 (d) .logo
24. 24.🎯 Which element does the selector .big style? (a) <span class="box"> (b) <div id="big"> (c) <div class="big"> (d) <div class="red">
25. 25.🎯 Which element does the selector h1 style? (a) <div id="intro"> (b) <h2> (c) <li class="star"> (d) <h1 class="star">
26. 26.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #main (b) #intro (c) h1 (d) .intro
27. 27.🎯 Which CSS selector matches this element?
    <div class="menu" id="intro">Hello</div> (a) .intro (b) .note (c) .menu (d) #main
28. 28.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .top (b) h1 (c) #star (d) .star
29. 29.🎯 Which CSS selector matches this element?
    <div class="big" id="intro">Hello</div> (a) .red (b) #main (c) .intro (d) div
30. 30.True or false: #hero is an id selector. (a) True (b) False
31. 31.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
33. 33.🎯 What kind of selector is img? (a) an element selector (b) an id selector (c) a class selector
34. 34.🎯 Which element does the selector .menu style? (a) <p id="menu"> (b) <p class="menu"> (c) <h1 class="big"> (d) <p class="note">
35. 35.🎯 Which CSS selector matches this element?
    <h2 class="note" id="top">Hello</h2> (a) #intro (b) li (c) h2 (d) #note
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) li (b) #top (c) .note (d) .top
37. 37.True or false: .big is a class selector. (a) True (b) False
38. 38.True or false: #main is a class selector. (a) False (b) True
39. 39.🎯 Which element does the selector .star style? (a) <li id="star"> (b) <li class="star"> (c) <li class="menu"> (d) <div class="note">
40. 40.🎯 Which CSS selector matches this element?
    <span class="menu" id="hero">Hello</span> (a) p (b) .hero (c) .menu (d) #top

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