CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 315 · 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.🎯 How many elements on a page should have the same id? (a) 5 (b) 2 (c) any number (d) 1
2. 2.🎯 Which CSS selector matches this element?
   <h1 class="star" id="main">Hello</h1> (a) #main (b) h2 (c) #logo (d) .menu
3. 3.🎯 Which element does the selector #main style? (a) <p id="main"> (b) <h1 class="star"> (c) <p class="main"> (d) <p id="logo">
4. 4.🎯 Which CSS selector matches this element?
   <p class="star" id="logo">Hello</p> (a) .menu (b) h1 (c) #logo (d) #end
5. 5.🎯 Which element does the selector span style? (a) <h1 class="menu"> (b) <span class="menu"> (c) <h2 id="logo"> (d) <p>
6. 6.🎯 Which CSS selector matches this element?
   <h1 class="star" id="intro">Hello</h1> (a) #main (b) .intro (c) .star (d) #star
7. 7.🎯 Which element does the selector span style? (a) <h1 class="box"> (b) <span class="box"> (c) <h2 id="intro"> (d) <p>
8. 8.🎯 Which CSS selector matches this element?
   <p class="big" id="logo">Hello</p> (a) .red (b) p (c) #big (d) h1
9. 9.🎯 Which CSS selector matches this element?
   <div class="red" id="logo">Hello</div> (a) .logo (b) #logo (c) span (d) #end
10. 10.🎯 What kind of selector is #end? (a) an element selector (b) a class selector (c) an id selector
11. 11.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
12. 12.🎯 Which sign starts a class selector? (a) @ (b) . (c) & (d) #
13. 13.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="big"> (c) <p id="big"> (d) <p class="red">
14. 14.True or false: body is an id selector. (a) True (b) False
15. 15.True or false: .big is a class selector. (a) True (b) False
16. 16.True or false: body is an element selector. (a) False (b) True
17. 17.🎯 Which element does the selector #main style? (a) <span id="logo"> (b) <span class="main"> (c) <span id="main"> (d) <p class="big">
18. 18.🎯 Which CSS selector matches this element?
    <h1 class="big" id="hero">Hello</h1> (a) .red (b) #top (c) h2 (d) #hero
19. 19.🎯 Which element does the selector h1 style? (a) <h1 class="big"> (b) <h2> (c) <li class="big"> (d) <div id="end">
20. 20.True or false: #main is an element selector. (a) True (b) False
21. 21.🎯 Which CSS selector matches this element?
    <h1 class="box" id="top">Hello</h1> (a) #intro (b) .box (c) .top (d) .star
22. 22.🎯 Which sign starts an id selector? (a) . (b) @ (c) # (d) &
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="big" id="logo">Hello</h1> (a) #logo (b) #big (c) h2 (d) #end
24. 24.🎯 Which element does the selector p style? (a) <h1> (b) <h2 class="box"> (c) <p class="box"> (d) <li id="main">
25. 25.🎯 Which element does the selector div style? (a) <h1 id="intro"> (b) <p class="big"> (c) <div class="big"> (d) <span>
26. 26.True or false: #logo is an element selector. (a) False (b) True
27. 27.🎯 Which CSS selector matches this element?
    <span class="menu" id="logo">Hello</span> (a) #logo (b) #menu (c) #end (d) p
28. 28.🎯 Which element does the selector #intro style? (a) <h2 class="intro"> (b) <h2 id="intro"> (c) <li class="box"> (d) <h2 id="main">
29. 29.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) li (b) .intro (c) #box (d) #main
30. 30.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) #hero (b) #top (c) .hero (d) .box
31. 31.🎯 What kind of selector is #top? (a) a class selector (b) an id selector (c) an element selector
32. 32.🎯 Which element does the selector #end style? (a) <li class="end"> (b) <div class="red"> (c) <li id="hero"> (d) <li id="end">
33. 33.🎯 What kind of selector is #logo? (a) an id selector (b) an element selector (c) a class selector
34. 34.🎯 Which element does the selector #hero style? (a) <span class="box"> (b) <div class="hero"> (c) <div id="top"> (d) <div id="hero">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) h2 (b) h1 (c) #intro (d) .big
36. 36.🎯 Which element does the selector #main style? (a) <div id="logo"> (b) <span class="menu"> (c) <div class="main"> (d) <div id="main">
37. 37.🎯 Which CSS selector matches this element?
    <h2 class="box" id="end">Hello</h2> (a) li (b) .star (c) .box (d) #hero
38. 38.🎯 Which element does the selector #end style? (a) <h1 id="hero"> (b) <h1 id="end"> (c) <h1 class="end"> (d) <h2 class="star">
39. 39.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="top">Hello</h2> (a) #top (b) .note (c) .top (d) li
40. 40.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector

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