CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 169 · 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="red" id="hero">Hello</div> (a) span (b) div (c) #red (d) #top
2. 2.🎯 Which CSS selector matches this element?
   <h2 class="red" id="logo">Hello</h2> (a) #logo (b) #end (c) .logo (d) li
3. 3.🎯 What kind of selector is li? (a) an element selector (b) a class selector (c) an id selector
4. 4.🎯 Which sign starts a class selector? (a) . (b) & (c) @ (d) #
5. 5.🎯 Which sign starts an id selector? (a) . (b) & (c) # (d) @
6. 6.🎯 Which CSS selector matches this element?
   <div class="big" id="end">Hello</div> (a) #big (b) div (c) .red (d) span
7. 7.🎯 What kind of selector is .note? (a) an element selector (b) an id selector (c) a class selector
8. 8.🎯 How many elements on a page should have the same id? (a) 2 (b) 5 (c) 1 (d) any number
9. 9.🎯 Which element does the selector .red style? (a) <h2 id="red"> (b) <li class="star"> (c) <h2 class="box"> (d) <h2 class="red">
10. 10.🎯 Can many elements share the same class? (a) Yes (b) No
11. 11.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) #box (b) .box (c) h1 (d) .star
12. 12.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
13. 13.🎯 Which CSS selector matches this element?
    <h1 class="box" id="main">Hello</h1> (a) #logo (b) .box (c) .star (d) h2
14. 14.True or false: .menu is a class selector. (a) False (b) True
15. 15.🎯 Which element does the selector #top style? (a) <p id="top"> (b) <h1 class="big"> (c) <p class="top"> (d) <p id="intro">
16. 16.🎯 Which CSS selector matches this element?
    <div class="big" id="logo">Hello</div> (a) div (b) span (c) #big (d) .logo
17. 17.🎯 Which CSS selector matches this element?
    <li class="menu" id="intro">Hello</li> (a) .intro (b) #intro (c) div (d) #menu
18. 18.🎯 Which CSS selector matches this element?
    <li class="red" id="hero">Hello</li> (a) .hero (b) div (c) #red (d) li
19. 19.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) p (b) h1 (c) #star (d) .menu
20. 20.🎯 What kind of selector is #logo? (a) an element selector (b) an id selector (c) a class selector
21. 21.🎯 Which element does the selector .red style? (a) <p class="red"> (b) <h1 class="star"> (c) <p class="box"> (d) <p id="red">
22. 22.🎯 Which CSS selector matches this element?
    <div class="star" id="intro">Hello</div> (a) #main (b) div (c) .intro (d) .menu
23. 23.🎯 What kind of selector is #top? (a) an element selector (b) a class selector (c) an id selector
24. 24.🎯 What kind of selector is .card? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which element does the selector #logo style? (a) <li class="note"> (b) <h2 id="logo"> (c) <h2 id="end"> (d) <h2 class="logo">
26. 26.🎯 Which CSS selector matches this element?
    <h1 class="red" id="top">Hello</h1> (a) #intro (b) h1 (c) h2 (d) #red
27. 27.True or false: #logo is an id selector. (a) False (b) True
28. 28.True or false: img is an id selector. (a) True (b) False
29. 29.🎯 Which element does the selector li style? (a) <div> (b) <p id="hero"> (c) <span class="big"> (d) <li class="big">
30. 30.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="note" id="end">Hello</h1> (a) .end (b) h1 (c) #note (d) h2
32. 32.🎯 Which CSS selector matches this element?
    <span class="box" id="intro">Hello</span> (a) #box (b) .intro (c) span (d) p
33. 33.🎯 Which element does the selector .star style? (a) <h1 class="note"> (b) <p class="star"> (c) <p id="star"> (d) <p class="menu">
34. 34.🎯 Which element does the selector h2 style? (a) <li> (b) <span id="top"> (c) <div class="big"> (d) <h2 class="big">
35. 35.🎯 Which CSS selector matches this element?
    <h1 class="star" id="logo">Hello</h1> (a) .menu (b) #star (c) .star (d) h2
36. 36.🎯 Which element does the selector .menu style? (a) <li class="menu"> (b) <li id="menu"> (c) <li class="note"> (d) <div class="big">
37. 37.🎯 Which element does the selector #end style? (a) <p class="end"> (b) <p id="end"> (c) <h1 class="star"> (d) <p id="hero">
38. 38.🎯 Which CSS selector matches this element?
    <div class="box" id="hero">Hello</div> (a) .hero (b) .star (c) #box (d) div
39. 39.🎯 Which CSS selector matches this element?
    <p class="menu" id="intro">Hello</p> (a) #main (b) .intro (c) #intro (d) h1
40. 40.True or false: .star is an id selector. (a) True (b) False

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