CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 342 · 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?
   <span class="menu" id="hero">Hello</span> (a) p (b) span (c) #top (d) .hero
2. 2.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
3. 3.🎯 How many elements on a page should have the same id? (a) any number (b) 1 (c) 5 (d) 2
4. 4.🎯 Which CSS selector matches this element?
   <p class="menu" id="hero">Hello</p> (a) h1 (b) .hero (c) #menu (d) .menu
5. 5.🎯 What kind of selector is .note? (a) an element selector (b) a class selector (c) an id selector
6. 6.🎯 Which element does the selector h2 style? (a) <span id="top"> (b) <h2 class="red"> (c) <div class="red"> (d) <li>
7. 7.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which element does the selector .note style? (a) <li class="note"> (b) <li id="note"> (c) <li class="big"> (d) <div class="red">
9. 9.True or false: #main is a class selector. (a) False (b) True
10. 10.🎯 What kind of selector is #main? (a) an element selector (b) an id selector (c) a class selector
11. 11.🎯 Which CSS selector matches this element?
    <p class="box" id="intro">Hello</p> (a) #main (b) .intro (c) .star (d) #intro
12. 12.🎯 Which element does the selector #top style? (a) <h2 class="top"> (b) <li class="big"> (c) <h2 id="intro"> (d) <h2 id="top">
13. 13.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
14. 14.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) #end (b) li (c) h2 (d) #box
15. 15.True or false: #top is a class selector. (a) True (b) False
16. 16.🎯 Which element does the selector #logo style? (a) <li class="box"> (b) <h2 id="end"> (c) <h2 class="logo"> (d) <h2 id="logo">
17. 17.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) h1 (b) .intro (c) #main (d) #note
19. 19.🎯 Which element does the selector #top style? (a) <li id="top"> (b) <div class="red"> (c) <li class="top"> (d) <li id="intro">
20. 20.🎯 Which CSS selector matches this element?
    <p class="menu" id="end">Hello</p> (a) #menu (b) .end (c) .menu (d) .note
21. 21.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
22. 22.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .main (b) .note (c) .menu (d) #menu
23. 23.True or false: img is an element selector. (a) True (b) False
24. 24.True or false: #hero is an id selector. (a) True (b) False
25. 25.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
26. 26.🎯 Which element does the selector li style? (a) <div> (b) <p id="logo"> (c) <span class="note"> (d) <li class="note">
27. 27.True or false: #hero is an element selector. (a) True (b) False
28. 28.🎯 Which CSS selector matches this element?
    <p class="box" id="hero">Hello</p> (a) p (b) #box (c) .hero (d) #top
29. 29.True or false: #main is an id selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="star" id="main">Hello</h1> (a) #logo (b) h1 (c) h2 (d) #star
31. 31.🎯 Which CSS selector matches this element?
    <span class="star" id="logo">Hello</span> (a) #star (b) .logo (c) span (d) .menu
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) .star (b) #top (c) #box (d) .box
33. 33.🎯 What kind of selector is .big? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector #hero style? (a) <span class="hero"> (b) <span id="hero"> (c) <span id="top"> (d) <p class="big">
35. 35.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
36. 36.🎯 Can many elements share the same class? (a) Yes (b) No
37. 37.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #end (b) .big (c) h2 (d) .logo
38. 38.🎯 Which element does the selector .big style? (a) <p class="box"> (b) <span class="red"> (c) <span id="big"> (d) <span class="big">
39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="logo">Hello</p> (a) p (b) h1 (c) .logo (d) .note
40. 40.🎯 Which element does the selector .red style? (a) <li class="star"> (b) <h2 class="box"> (c) <h2 class="red"> (d) <h2 id="red">

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