CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 706 · 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="big" id="hero">Hello</span> (a) .red (b) span (c) #big (d) .hero
2. 2.🎯 How many elements on a page should have the same id? (a) 1 (b) 5 (c) any number (d) 2
3. 3.True or false: h1 is an id selector. (a) False (b) True
4. 4.🎯 What kind of selector is body? (a) an id selector (b) a class selector (c) an element selector
5. 5.🎯 Which CSS selector matches this element?
   <span class="star" id="intro">Hello</span> (a) .intro (b) #star (c) #main (d) span
6. 6.🎯 Can many elements share the same class? (a) No (b) Yes
7. 7.🎯 Which CSS selector matches this element?
   <p class="menu" id="end">Hello</p> (a) #hero (b) .end (c) #end (d) #menu
8. 8.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
9. 9.🎯 Which CSS selector matches this element?
   <p class="box" id="logo">Hello</p> (a) .star (b) p (c) #box (d) #end
10. 10.🎯 Which element does the selector h1 style? (a) <h2> (b) <h1 class="big"> (c) <li class="big"> (d) <div id="main">
11. 11.🎯 What kind of selector is .menu? (a) an element selector (b) an id selector (c) a class selector
12. 12.True or false: .menu is a class selector. (a) False (b) True
13. 13.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) div (b) li (c) .red (d) #end
14. 14.🎯 Which CSS selector matches this element?
    <span class="note" id="main">Hello</span> (a) #logo (b) p (c) #note (d) #main
15. 15.🎯 Which CSS selector matches this element?
    <span class="note" id="end">Hello</span> (a) .big (b) .end (c) #note (d) span
16. 16.🎯 What kind of selector is li? (a) an element selector (b) an id selector (c) a class selector
17. 17.🎯 Which CSS selector matches this element?
    <h1 class="star" id="top">Hello</h1> (a) #star (b) #intro (c) .top (d) #top
18. 18.🎯 Which CSS selector matches this element?
    <li class="red" id="main">Hello</li> (a) .box (b) #logo (c) li (d) #red
19. 19.🎯 Which CSS selector matches this element?
    <p class="menu" id="main">Hello</p> (a) #logo (b) .note (c) .main (d) p
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="box" id="intro">Hello</h1> (a) h1 (b) h2 (c) #main (d) .intro
21. 21.True or false: .note is a class selector. (a) False (b) True
22. 22.True or false: .big is an id selector. (a) False (b) True
23. 23.🎯 What kind of selector is #top? (a) an id selector (b) a class selector (c) an element selector
24. 24.🎯 Which element does the selector li style? (a) <p id="hero"> (b) <div> (c) <span class="menu"> (d) <li class="menu">
25. 25.🎯 Which CSS selector matches this element?
    <p class="big" id="intro">Hello</p> (a) h1 (b) .red (c) .big (d) #big
26. 26.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
27. 27.🎯 Which element does the selector #top style? (a) <span id="intro"> (b) <span class="top"> (c) <p class="note"> (d) <span id="top">
28. 28.🎯 Which CSS selector matches this element?
    <li class="star" id="main">Hello</li> (a) #star (b) .main (c) li (d) #logo
29. 29.🎯 Which element does the selector #intro style? (a) <h1 id="main"> (b) <h2 class="big"> (c) <h1 class="intro"> (d) <h1 id="intro">
30. 30.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
31. 31.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) .star (b) #box (c) span (d) #top
32. 32.True or false: #logo is a class selector. (a) True (b) False
33. 33.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
34. 34.🎯 Which element does the selector #end style? (a) <div id="hero"> (b) <div id="end"> (c) <span class="red"> (d) <div class="end">
35. 35.🎯 What kind of selector is p? (a) an id selector (b) an element selector (c) a class selector
36. 36.🎯 Which CSS selector matches this element?
    <div class="box" id="end">Hello</div> (a) #hero (b) span (c) .box (d) .star
37. 37.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #box (b) span (c) #hero (d) .star
38. 38.🎯 What kind of selector is #hero? (a) an id selector (b) a class selector (c) an element selector
39. 39.🎯 Which CSS selector matches this element?
    <span class="note" id="intro">Hello</span> (a) #intro (b) .intro (c) #note (d) #main
40. 40.🎯 Which element does the selector .red style? (a) <span id="red"> (b) <span class="box"> (c) <p class="star"> (d) <span class="red">

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