CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 151 · 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?
   <div class="big" id="main">Hello</div> (a) #logo (b) span (c) div (d) #big
2. 2.🎯 What kind of selector is .card? (a) a class selector (b) an id selector (c) an element selector
3. 3.🎯 How many elements on a page should have the same id? (a) 1 (b) 2 (c) 5 (d) any number
4. 4.True or false: .card is an element selector. (a) True (b) False
5. 5.🎯 Which element does the selector #hero style? (a) <div class="hero"> (b) <div id="hero"> (c) <span class="menu"> (d) <div id="top">
6. 6.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
7. 7.🎯 What kind of selector is #main? (a) an id selector (b) an element selector (c) a class selector
8. 8.🎯 Which element does the selector #top style? (a) <span class="top"> (b) <span id="intro"> (c) <span id="top"> (d) <p class="red">
9. 9.🎯 Which element does the selector h2 style? (a) <h2 class="star"> (b) <span id="logo"> (c) <div class="star"> (d) <li>
10. 10.True or false: #logo is an element selector. (a) True (b) False
11. 11.🎯 What kind of selector is li? (a) a class selector (b) an element selector (c) an id selector
12. 12.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .note (b) #intro (c) .intro (d) #main
13. 13.🎯 Which sign starts a class selector? (a) . (b) # (c) & (d) @
14. 14.🎯 Which CSS selector matches this element?
    <li class="big" id="logo">Hello</li> (a) li (b) #big (c) .logo (d) div
15. 15.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
16. 16.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
17. 17.🎯 What kind of selector is #hero? (a) a class selector (b) an element selector (c) an id selector
18. 18.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="hero">
19. 19.True or false: #top is an id selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <h1 class="red" id="main">Hello</h1> (a) .red (b) .main (c) .box (d) h2
21. 21.🎯 Which CSS selector matches this element?
    <li class="big" id="hero">Hello</li> (a) .hero (b) li (c) div (d) #big
22. 22.🎯 Which element does the selector #logo style? (a) <h2 class="logo"> (b) <h2 id="end"> (c) <li class="big"> (d) <h2 id="logo">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="hero">Hello</h1> (a) .note (b) #top (c) h2 (d) #note
24. 24.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h2 class="menu"> (c) <h1 id="end"> (d) <h1 id="logo">
25. 25.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="star" id="intro">Hello</h2> (a) #star (b) .intro (c) li (d) h2
27. 27.True or false: .menu is a class selector. (a) True (b) False
28. 28.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
29. 29.True or false: .note is a class selector. (a) False (b) True
30. 30.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) .star (b) .menu (c) #star (d) h1
31. 31.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) #menu (b) #logo (c) .note (d) div
32. 32.🎯 What kind of selector is h1? (a) an id selector (b) an element selector (c) a class selector
33. 33.True or false: #main is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <div class="note" id="end">Hello</div> (a) .big (b) #end (c) #note (d) #hero
35. 35.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
36. 36.🎯 Which element does the selector .box style? (a) <p class="box"> (b) <h1 class="menu"> (c) <p id="box"> (d) <p class="star">
37. 37.🎯 Which element does the selector div style? (a) <span> (b) <p class="big"> (c) <div class="big"> (d) <h1 id="intro">
38. 38.True or false: .star is an id selector. (a) True (b) False
39. 39.🎯 What kind of selector is .note? (a) an id selector (b) a class selector (c) an element selector
40. 40.🎯 Which CSS selector matches this element?
    <h2 class="box" id="logo">Hello</h2> (a) h2 (b) #box (c) #end (d) li

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