CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 487 · 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 sign starts a class selector? (a) # (b) . (c) & (d) @
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="menu" id="intro">Hello</h2> (a) #main (b) .menu (c) li (d) .intro
3. 3.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
4. 4.🎯 Which element does the selector #end style? (a) <p id="end"> (b) <p class="end"> (c) <h1 class="menu"> (d) <p id="hero">
5. 5.🎯 What kind of selector is .note? (a) a class selector (b) an id selector (c) an element selector
6. 6.True or false: .star is an element selector. (a) True (b) False
7. 7.True or false: h1 is a class selector. (a) True (b) False
8. 8.🎯 Which CSS selector matches this element?
   <p class="note" id="hero">Hello</p> (a) #hero (b) .hero (c) h1 (d) #note
9. 9.True or false: #top is an element selector. (a) True (b) False
10. 10.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) #main (b) .main (c) #logo (d) span
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) .star (b) li (c) #main (d) #star
12. 12.🎯 Which CSS selector matches this element?
    <span class="box" id="end">Hello</span> (a) #hero (b) p (c) .star (d) span
13. 13.🎯 What kind of selector is h1? (a) a class selector (b) an id selector (c) an element selector
14. 14.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
15. 15.🎯 What kind of selector is .star? (a) an element selector (b) an id selector (c) a class selector
16. 16.🎯 Which element does the selector div style? (a) <h1 id="main"> (b) <div class="box"> (c) <p class="box"> (d) <span>
17. 17.🎯 Which element does the selector #logo style? (a) <p id="end"> (b) <p class="logo"> (c) <p id="logo"> (d) <h1 class="box">
18. 18.🎯 Which CSS selector matches this element?
    <div class="star" id="end">Hello</div> (a) .star (b) #hero (c) #star (d) .menu
19. 19.🎯 Which CSS selector matches this element?
    <span class="box" id="hero">Hello</span> (a) #box (b) span (c) .star (d) p
20. 20.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) .note (b) h2 (c) li (d) #menu
21. 21.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <li id="logo"> (c) <div class="big"> (d) <li id="end">
22. 22.🎯 Which CSS selector matches this element?
    <div class="note" id="main">Hello</div> (a) span (b) .big (c) .note (d) #note
23. 23.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
24. 24.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .red (b) #top (c) .box (d) .hero
26. 26.True or false: body is an element selector. (a) False (b) True
27. 27.🎯 How many elements on a page should have the same id? (a) any number (b) 2 (c) 5 (d) 1
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="top">Hello</div> (a) #intro (b) #red (c) .red (d) span
29. 29.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) .note (b) #hero (c) div (d) .end
30. 30.True or false: img is an id selector. (a) False (b) True
31. 31.🎯 Which element does the selector #hero style? (a) <span class="box"> (b) <div id="hero"> (c) <div id="top"> (d) <div class="hero">
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="box" id="main">Hello</h2> (a) .star (b) .main (c) li (d) #main
33. 33.🎯 Which CSS selector matches this element?
    <li class="menu" id="top">Hello</li> (a) #intro (b) #menu (c) .note (d) li
34. 34.🎯 Which element does the selector div style? (a) <span> (b) <h1 id="logo"> (c) <div class="big"> (d) <p class="big">
35. 35.🎯 Which element does the selector h1 style? (a) <div id="end"> (b) <h1 class="box"> (c) <li class="box"> (d) <h2>
36. 36.True or false: #top is a class selector. (a) False (b) True
37. 37.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
38. 38.True or false: body is a class selector. (a) True (b) False
39. 39.🎯 Which element does the selector #top style? (a) <h1 id="top"> (b) <h2 class="big"> (c) <h1 class="top"> (d) <h1 id="intro">
40. 40.🎯 Which CSS selector matches this element?
    <li class="box" id="end">Hello</li> (a) .end (b) #box (c) .box (d) .star

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