CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 340 · 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?
   <h2 class="red" id="intro">Hello</h2> (a) #main (b) #red (c) h2 (d) .intro
2. 2.🎯 Which CSS selector matches this element?
   <span class="big" id="end">Hello</span> (a) span (b) .end (c) #hero (d) p
3. 3.True or false: #main is an id selector. (a) True (b) False
4. 4.True or false: .note is an element selector. (a) True (b) False
5. 5.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 5 (d) 1
6. 6.🎯 Which sign starts a class selector? (a) & (b) @ (c) . (d) #
7. 7.🎯 What kind of selector is p? (a) a class selector (b) an element selector (c) an id selector
8. 8.True or false: #logo is an id selector. (a) False (b) True
9. 9.🎯 Which CSS selector matches this element?
   <p class="star" id="hero">Hello</p> (a) h1 (b) #hero (c) .menu (d) #star
10. 10.True or false: .card is an id selector. (a) False (b) True
11. 11.🎯 Which CSS selector matches this element?
    <li class="note" id="top">Hello</li> (a) li (b) #note (c) div (d) .big
12. 12.🎯 Which sign starts an id selector? (a) . (b) # (c) @ (d) &
13. 13.🎯 Can many elements share the same class? (a) Yes (b) No
14. 14.🎯 Which CSS selector matches this element?
    <p class="box" id="logo">Hello</p> (a) .star (b) #box (c) p (d) .logo
15. 15.🎯 What kind of selector is #end? (a) a class selector (b) an element selector (c) an id selector
16. 16.🎯 Which CSS selector matches this element?
    <li class="menu" id="main">Hello</li> (a) #menu (b) #main (c) .main (d) div
17. 17.🎯 Which CSS selector matches this element?
    <p class="red" id="end">Hello</p> (a) #hero (b) #end (c) #red (d) .box
18. 18.True or false: #end is an id selector. (a) False (b) True
19. 19.True or false: .star is an id selector. (a) True (b) False
20. 20.🎯 Which CSS selector matches this element?
    <span class="menu" id="top">Hello</span> (a) p (b) #menu (c) #top (d) .top
21. 21.🎯 Which element does the selector span style? (a) <span class="note"> (b) <h1 class="note"> (c) <h2 id="end"> (d) <p>
22. 22.🎯 Which element does the selector .menu style? (a) <li id="menu"> (b) <li class="note"> (c) <li class="menu"> (d) <div class="big">
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="intro">Hello</h1> (a) .big (b) #note (c) #intro (d) h2
24. 24.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
25. 25.🎯 Which CSS selector matches this element?
    <li class="menu" id="hero">Hello</li> (a) #menu (b) #top (c) .note (d) li
26. 26.🎯 What kind of selector is .menu? (a) a class selector (b) an element selector (c) an id selector
27. 27.🎯 Which element does the selector .box style? (a) <h1 class="star"> (b) <h1 id="box"> (c) <h2 class="menu"> (d) <h1 class="box">
28. 28.🎯 What kind of selector is #logo? (a) an id selector (b) a class selector (c) an element selector
29. 29.🎯 Which element does the selector div style? (a) <p class="note"> (b) <span> (c) <h1 id="top"> (d) <div class="note">
30. 30.🎯 Which element does the selector #intro style? (a) <h2 id="main"> (b) <h2 class="intro"> (c) <h2 id="intro"> (d) <li class="big">
31. 31.🎯 Which CSS selector matches this element?
    <span class="big" id="intro">Hello</span> (a) #main (b) span (c) .red (d) .intro
32. 32.🎯 Which CSS selector matches this element?
    <h1 class="big" id="main">Hello</h1> (a) #main (b) .red (c) h2 (d) .main
33. 33.True or false: .note is an id selector. (a) True (b) False
34. 34.🎯 What kind of selector is #hero? (a) an id selector (b) an element selector (c) a class selector
35. 35.True or false: .card is a class selector. (a) False (b) True
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="main">Hello</h2> (a) h2 (b) #menu (c) #logo (d) .main
37. 37.🎯 Which CSS selector matches this element?
    <div class="red" id="end">Hello</div> (a) .end (b) span (c) #end (d) .box
38. 38.True or false: #top is a class selector. (a) False (b) True
39. 39.True or false: img is an element selector. (a) True (b) False
40. 40.🎯 Which CSS selector matches this element?
    <span class="box" id="top">Hello</span> (a) #box (b) p (c) #top (d) .star

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