CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 867 · 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="box" id="main">Hello</span> (a) .main (b) #box (c) .box (d) p
2. 2.🎯 Which sign starts a class selector? (a) # (b) @ (c) & (d) .
3. 3.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .top (b) #top (c) #intro (d) li
4. 4.🎯 Which CSS selector matches this element?
   <div class="box" id="top">Hello</div> (a) span (b) div (c) .star (d) .top
5. 5.🎯 Can many elements share the same class? (a) No (b) Yes
6. 6.🎯 What kind of selector is img? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .big (b) li (c) #note (d) h2
8. 8.🎯 Which element does the selector .note style? (a) <h2 id="note"> (b) <h2 class="note"> (c) <li class="red"> (d) <h2 class="big">
9. 9.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
10. 10.🎯 What kind of selector is body? (a) an element selector (b) an id selector (c) a class selector
11. 11.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) .logo (b) li (c) h2 (d) #big
12. 12.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="menu"> (c) <span class="note"> (d) <div class="star">
13. 13.True or false: h1 is an element selector. (a) False (b) True
14. 14.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) any number (d) 1
15. 15.🎯 Which element does the selector #intro style? (a) <span class="menu"> (b) <div class="intro"> (c) <div id="main"> (d) <div id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <h2 class="big" id="end">Hello</h2> (a) li (b) .big (c) .end (d) #big
17. 17.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) .main (b) #logo (c) .note (d) #main
18. 18.True or false: img is an id selector. (a) True (b) False
19. 19.🎯 Which element does the selector #logo style? (a) <h1 id="end"> (b) <h1 class="logo"> (c) <h1 id="logo"> (d) <h2 class="big">
20. 20.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) #big (b) li (c) .hero (d) .red
21. 21.🎯 Which element does the selector div style? (a) <span> (b) <div class="big"> (c) <h1 id="top"> (d) <p class="big">
22. 22.🎯 Which CSS selector matches this element?
    <p class="big" id="end">Hello</p> (a) .red (b) #end (c) .end (d) #big
23. 23.True or false: .note is a class selector. (a) False (b) True
24. 24.🎯 Which CSS selector matches this element?
    <p class="box" id="main">Hello</p> (a) #box (b) #logo (c) .box (d) .main
25. 25.🎯 Which CSS selector matches this element?
    <h1 class="big" id="intro">Hello</h1> (a) #big (b) h2 (c) #intro (d) #main
26. 26.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="menu"> (d) <h2 id="logo">
27. 27.🎯 Which element does the selector #end style? (a) <li id="hero"> (b) <div class="note"> (c) <li class="end"> (d) <li id="end">
28. 28.🎯 Which CSS selector matches this element?
    <div class="big" id="main">Hello</div> (a) .main (b) span (c) #big (d) .big
29. 29.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
30. 30.🎯 What kind of selector is p? (a) an element selector (b) a class selector (c) an id selector
31. 31.True or false: #end is a class selector. (a) False (b) True
32. 32.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) .star (b) .end (c) #hero (d) h2
33. 33.🎯 Which CSS selector matches this element?
    <h2 class="red" id="top">Hello</h2> (a) .top (b) li (c) #top (d) #red
34. 34.🎯 Which CSS selector matches this element?
    <h1 class="red" id="logo">Hello</h1> (a) h2 (b) .red (c) .box (d) .logo
35. 35.🎯 What kind of selector is .menu? (a) a class selector (b) an id selector (c) an element selector
36. 36.True or false: #main is an id selector. (a) False (b) True
37. 37.🎯 Which CSS selector matches this element?
    <p class="big" id="logo">Hello</p> (a) #big (b) .red (c) #end (d) #logo
38. 38.🎯 Which element does the selector #top style? (a) <span class="box"> (b) <div class="top"> (c) <div id="top"> (d) <div id="intro">
39. 39.🎯 What kind of selector is #main? (a) an element selector (b) a class selector (c) an id selector
40. 40.🎯 Which element does the selector #main style? (a) <div class="main"> (b) <div id="logo"> (c) <span class="menu"> (d) <div id="main">

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