CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 606 · 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.🎯 What kind of selector is .star? (a) a class selector (b) an element selector (c) an id selector
2. 2.🎯 Which CSS selector matches this element?
   <p class="box" id="intro">Hello</p> (a) h1 (b) p (c) .intro (d) .star
3. 3.🎯 Which CSS selector matches this element?
   <h1 class="note" id="logo">Hello</h1> (a) #end (b) #logo (c) #note (d) h2
4. 4.🎯 Which element does the selector #intro style? (a) <h1 class="star"> (b) <p id="intro"> (c) <p id="main"> (d) <p class="intro">
5. 5.🎯 Which CSS selector matches this element?
   <h2 class="note" id="top">Hello</h2> (a) .top (b) .note (c) #note (d) li
6. 6.🎯 Which CSS selector matches this element?
   <div class="star" id="intro">Hello</div> (a) #star (b) .menu (c) span (d) div
7. 7.True or false: .star is an element selector. (a) False (b) True
8. 8.🎯 Which element does the selector .big style? (a) <h1 class="big"> (b) <h2 class="box"> (c) <h1 class="red"> (d) <h1 id="big">
9. 9.True or false: h1 is an element selector. (a) False (b) True
10. 10.True or false: p is an element selector. (a) False (b) True
11. 11.🎯 Which sign starts a class selector? (a) & (b) @ (c) # (d) .
12. 12.🎯 Which CSS selector matches this element?
    <span class="star" id="intro">Hello</span> (a) #main (b) .intro (c) span (d) p
13. 13.🎯 Which element does the selector .star style? (a) <h2 class="note"> (b) <h1 class="star"> (c) <h1 class="menu"> (d) <h1 id="star">
14. 14.🎯 How many elements on a page should have the same id? (a) 2 (b) 1 (c) any number (d) 5
15. 15.🎯 Which element does the selector span style? (a) <h2 id="main"> (b) <h1 class="star"> (c) <span class="star"> (d) <p>
16. 16.True or false: #main is an id selector. (a) True (b) False
17. 17.🎯 Which element does the selector li style? (a) <li class="menu"> (b) <div> (c) <p id="top"> (d) <span class="menu">
18. 18.🎯 What kind of selector is #logo? (a) a class selector (b) an element selector (c) an id selector
19. 19.🎯 Which element does the selector .menu style? (a) <h1 class="note"> (b) <h1 id="menu"> (c) <h2 class="big"> (d) <h1 class="menu">
20. 20.True or false: .card is an id selector. (a) False (b) True
21. 21.🎯 Which CSS selector matches this element?
    <p class="red" id="main">Hello</p> (a) #red (b) .box (c) #logo (d) p
22. 22.🎯 Which CSS selector matches this element?
    <div class="star" id="top">Hello</div> (a) #intro (b) #star (c) .menu (d) div
23. 23.🎯 Can many elements share the same class? (a) No (b) Yes
24. 24.🎯 What kind of selector is .menu? (a) an id selector (b) a class selector (c) an element selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="box" id="intro">Hello</li> (a) li (b) div (c) #box (d) .intro
26. 26.🎯 Which CSS selector matches this element?
    <h2 class="big" id="logo">Hello</h2> (a) #end (b) .red (c) #big (d) .big
27. 27.🎯 Which element does the selector span style? (a) <p> (b) <h2 id="logo"> (c) <span class="red"> (d) <h1 class="red">
28. 28.🎯 Which CSS selector matches this element?
    <div class="red" id="hero">Hello</div> (a) span (b) #hero (c) .box (d) #top
29. 29.True or false: body is an element selector. (a) True (b) False
30. 30.🎯 What kind of selector is p? (a) an id selector (b) a class selector (c) an element selector
31. 31.🎯 Which CSS selector matches this element?
    <h1 class="box" id="hero">Hello</h1> (a) h2 (b) .hero (c) #hero (d) #box
32. 32.🎯 What kind of selector is img? (a) a class selector (b) an id selector (c) an element selector
33. 33.True or false: #main is a class selector. (a) False (b) True
34. 34.🎯 Which CSS selector matches this element?
    <li class="big" id="end">Hello</li> (a) #big (b) .red (c) div (d) li
35. 35.🎯 Which CSS selector matches this element?
    <p class="big" id="top">Hello</p> (a) .big (b) #big (c) #intro (d) .red
36. 36.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #hero (b) #menu (c) span (d) div
37. 37.True or false: .menu is a class selector. (a) True (b) False
38. 38.True or false: img is a class selector. (a) False (b) True
39. 39.🎯 Which CSS selector matches this element?
    <p class="star" id="end">Hello</p> (a) .end (b) h1 (c) #star (d) p
40. 40.🎯 Which CSS selector matches this element?
    <h1 class="red" id="hero">Hello</h1> (a) .red (b) h2 (c) .hero (d) #red

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